The mean of the sample is point estimator of mean of the population from which samples are drawn randomly.
Correct option: II and III is correct choice.
What is the relationship between population mean and sample mean?Samples G and H are selected from the same population of quantitative data. Mean of G is equal to the mean of the population. We cannot work on population in most of the cases thus we draw samples and work on sample to predict the properties of population. Sample mean is point estimator of population mean, and is used to predict the population mean.
Since both G and H are samples drawn from same population, thus, they both are point estimators of the population mean. It is not necessary that both G and H must be same. They can be same and cannot be same.
Thus, Option: II and III is correct choice
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The complete question is as follows:
Samples G and H were selected from the same population of quantitative data and the mean of each sample was determined. The mean of sample G is equal to the mean of the population. Which of the following statements must be true?
I. The mean of sample H must also be equal to the population mean.
II. The mean of sample G, TG, is a point estimator for the mean of the population.
III. The mean of sample H, my, is a point estimator for the mean of the population.
A. I only
B. II only
С. III only
D. I and II
E. II and III
What is the formula for calculating gravity?.
G is the constant for gravitational, M is the given mass for one object, m is the mass of another item, and r is the distance between them. This formula for the force of gravity is: GMm / r^2.
A planet or other entity will pull items toward its center using its gravitational pull. All of the planets remain in orbit around the sun due to the force of gravity.
There are many gravity equations instead of just one, two, or even three. Newton's general law of gravitation is best exemplified by the most widely known version: The gravitational force between two masses (M and m) that are separated by the constant r is given by the equation F = GMm / r^2, where F is the gravitational force.
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What is the magnitude of vector 2i 3j 3k?.
The magnitude for the vector 2i+3j+3k is [tex]\sqrt{22}[/tex]
There is no other way to define magnitude in physics other than "distance or quantity." It shows the movement of a moving item, including any absolute, relative, or particular sized movements. It can be used to provide any object's size or range. Magnitude is a generic term in physics that refers to size or distance.
The strength of a force is quantified by a figure termed its magnitude. Let's imagine an eastward-moving 10 N force is present. "towards east" indicates a direction, and "10" indicates how powerful the force is. Any physical quantity's "value" or "amount," in other words, can be thought of as its magnitude.
[tex]= \sqrt{a^{2} + b^{2} +c^{2} } \\= \sqrt{2^{2} + 3^{2} +3^{2} }\\= \sqrt{22}[/tex]
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Correct Question:
What is the magnitude of vector 2i+3j+3k?.
What is the expected outcome of gametes produced if nondisjunction occurs during meiosis II?.
The expected outcome of this nondisjunction would be that 2 of the total 4 daughter cells produced/formed will have a normal complement of 23 chromosomes and the other 2 daughter cells will be aneuploid.
Nondisjunction is a state that can occur during anaphase stage of mitosis, meiosis I, or meiosis II. During anaphase, the sister chromatids (or homologous chromosomes for meiosis I), would separate and move to opposite poles of the cell, pulled by aster or microtubules. In nondisjunction, this separation fails to occur causing both of the sister chromatids of homologous chromosomes to be pulled to either one pole of the cell.
Mitotic nondisjunction can occur as a result of the inactivation of either topoisomerase II, or condensin, or separase. This would result in formation of aneuploid daughter cells, one with 47 chromosomes (i.e. 2n+1) and the other one with 45 chromosomes (i.e. 2n-1).
Nondisjunction in meiosis I occurs after the tetrads fail to separate during anaphase I stage. At the end of meiosis I, there would be 2 haploid daughter cells, one with n+1 set and the other one with n-1 set. Both of these daughter cells would then go on to divide once more in meiosis II, producing/forming 4 daughter cells, 2 of them with n+1 set and the rest 2 with n-1 set.
Nondisjunction in meiosis II is a result of the failure of the sister chromatids to separate during anaphase II stage. Since meiosis I proceeded without error in this case, 2 of the 4 daughter cells formed would have a normal complement of 23 chromosomes. On the other hand, the other 2 daughter cells would be aneuploid, one with n+1 set and the other one with n-1 set.
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How do you find the magnitude of three vectors?.
The magnitude of a vector is a scalar value that represents the length or size of the vector. It can be found by using the Pythagorean theorem.
The square root of (the x component squared + the y component squared + the z component squared)
For example, if the vector is (3, 4, 2), then you would find the magnitude as follows:
Square the x component (3) to get 9
Square the y component (4) to get 16
Square the z component (2) to get 4
Add the squares (9 + 16 + 4) to get 29
Take the square root of the sum (√29) to get the magnitude, which is approximately 5.38516
So the magnitude of the vector (3, 4, 2) is 5.38516
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Rank the six combinations of electric charges on the basis of the electric force acting on q1. Define forces pointing to the right as positive and forces pointing to the left as negative.
Therefore, even though the charge is negative, the mod will make it positive, making the electric field also positive. Consequently, the electric field is always positive.
What is positive and negative forces?Force is the pushing or pulling of an object. The force acting on a body in the opposite direction from the applied force is referred to as a negative force. Positive force is applied, and it is directed to the right, as opposed to negative force, which is directed to the left.This means that two positively charged items will push or repel one another if they get close to one another. A positively charged object and a negatively charged object will be drawn to one another and attempt to combine if they are in close proximity.A small positive test charge q is subjected to the Coulomb or electrostatic force F, which is the definition of the electric field E as E=Fq E = F q.To learn more about electric refer to:
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Particles q1 = -66.3 UC, q2 = +108 uC, and
93 = -43.2 uC are in a line. Particles q1 and q2 are
separated by 0.550 m and particles q2 and q3 are
separated by 0.550 m. What is the net force on
particle q2?
PLEASE PLEASE HELP ME PLEASE
The sum total of all forces which are acting on an object is known as the net force. A mass can accelerate due to the net force.
What is net force?The net force is the vector sum of all the forces which act upon an object. Net force is the sum of all the forces, taking the force as a vector and two forces of equal magnitude and opposite direction will cancel each other out.
Here, r₁₂ = 0.550m and r₂₃ = 0.550m. Then the distance from the first charge to the third one will be:
r₁₃ = r₁₂ + r₂₃ = 0.550 + 0.550 = 1.1m
According to the Coulomb's law, the net force on particle q₂ will be equal to the sum of the forces on particle q₂ from the particle q₁ and q₃.
F₃+ = F₁₃ +F₂₃ = q₁q₂/r²₁₃ + k q₃q₂/r²₂₃
Where, k = 9 × 10⁹ N m²/C²
Substituting numerical values, we obtain:
F₃ = 9 × 10⁹ (-66.3 × 10⁻⁶)(-43.2 × 9 × 10⁻⁶)/ 1.45² + 9 × 10⁹ × 108 × 10⁻⁶ (-43.2 × 10⁻⁶) / 0.550²
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Water leaves a hose at a rate of 5.0 kg/s with a speed of 50 m/s. It strikes a wall which stops it (ignoring splash back). What is the force exerted by the water on the wall? Ans: -250 N
Answer: Force = -250 N
Explanation:
According to the question,
In 1 sec 5.0 kg water leaves the hose with a speed of 42 m/s
So initial momentum of 5.0kg water = 5.0 x 50 kg m/s
Since the water strikes the wall , it loses its speed to zero
Final momentum = 0
We know,
Force = Change in momentum / time
= (0 - 5 X 50) / 1
= -(5 X 50) / 1
= -250 N
Therefore the force exerted by the water leaving at a rate of 5.0 kg/s with a speed of 50 m/s on the wall is -250 N.
What is the formula and unit of gravitational force?.
The symbol for gravitational force is kilogram-force (kgf). In addition, 1 k g f = 9.8N. F = G Mm/r² is the formula or equation for the gravitational force.
Every particle in the cosmos attracts every other particle with a force that is proportional to the product of their masses and inversely proportional to the square of the distance between their centers, according to Newton's law of universal gravitation.
The passing of the law is referred to as the "first great unification" since it brought together previously recorded Earthly gravity events with well-known celestial behaviours.
The force is inversely equal to the square of the distance between the two masses and proportionate to the product of the two masses.
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What is the angle between the two vectors 3i 4j 5k and 3i 4j 5k?.
The vectors are 3i 4j 5k and 3i 4j 5k, which are identical. Therefore, there is no angle between them.
The angle between two vectors can be found by using the dot product formula which is (A.B) = (||A|| * ||B||) cos(theta)
in vector mathematics, the angle between two vectors can be calculated using the dot product of the vectors. The dot product is a scalar value that is equal to the product of the magnitudes of the vectors and the cosine of the angle between them.
In this case, the vectors are 3i 4j 5k and 3i 4j 5k, which are identical. So the dot product of the vectors will be (3i 4j 5k).(3i 4j 5k) = (33 + 44 + 5*5) = 3^2 + 4^2 + 5^2 = 9 + 16 + 25 = 50
The angle between two identical vectors is 0 degrees.
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Which of the following best defines a market in economics terms
Answer:
market is defined as the sum total of all the buyers and sellers in the area or region under consideration. The area may be the earth, or countries, regions, states, or cities. The value, cost and price of items traded are as per forces of supply and demand in a market.
Answer:
A market is defined as the sum total of all the buyers and sellers in the area or region under consideration.
Explanation:
2. The timing mechanism in a grandfather's clock is based on the principles of a simple
pendulum. If your clock is gaining time (running fast) what should you do to get it running
more accurately?
To get a grandfather clock running more accurately, if it is gaining time, you should adjust the length of the pendulum.
How to adjust the length of the pendulum?
This can typically be done by moving the pendulum bob up or down the pendulum rod. A shorter pendulum will cause the clock to run faster, while a longer pendulum will cause it to run slower.
It is important to make small adjustments and wait for the clock to stabilize before making further adjustments. It's also recommended to consult the clock's manual for instructions on how to adjust the pendulum length.
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What is latency and why is it important?.
Latency is the amount of time it takes for a packet of data to travel from its origin to its destination. Latency is measured in milliseconds.
In general, latency is a time delay between the cause and effect of some physical change in the system being observed. Lag, as it is known in gaming circles, is the time lag between the input to a simulation and the visual or auditory response, which is frequently caused by network latency in online games.
Latency is caused by the limited velocity at which any physical interaction can propagate. This velocity's magnitude is always less than or equal to the speed of light. As a result, regardless of the nature of the stimulation, every physical system with any physical separation (distance) between cause and effect will experience some sort of latency.
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Direction: Use the word bank to answer the following questions. Each word will be used only once. Crest Frequency Mechanical Infrared Trough Transverse Radio Gamma Wavelength Longitudinal Ultraviolet X-rays Visible Light Amplitude Electromagnetic___________________ is the maximum distance that matter is displaced from the resting position.
The largest distance that matter can be pushed from its resting position is called the electromagnetic amplitude.
What does electromagnetic wave amplitude mean? For your responses, refer to the word bank.Only one instance of each term will be utilized.Inflation Rate Transmission of Transverse Infrared through Mechanical Beta Wavelength Longitudinal ultraviolet X-rays Visible Amount of light .The largest distance that matter can be pushed from its resting position is called the electromagnetic amplitude.The wavelength of electromagnetic waves, which is the space between succeeding peaks and is measured in units of length, and the intensity, or amplitude, which is the height of each peak, are the two main characteristics of these waves.X and gamma rays can be seen on the far right.These electromagnetic waves are the ones with the highest frequencies and the shortest wavelengths.Furthermore, they are the most energetic.
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Do mass depends on velocity?.
Mass of an object does not depends on velocity of an object.
Mass is a scalar quantity that measures the amount of matter in an object, and it remains constant regardless of the object's motion.
It is a property of the object itself and does not depend on its location or motion. On the other hand, velocity is a vector quantity that measures both the speed and direction of an object's motion. It can change as the object moves or as its direction of motion changes.
There is no direct relationship between mass and velocity, and they do not affect each other. They are independent physical quantities that are used to describe different aspects of an object. The mass of an object determines its inertia and gravitational attraction, while velocity determines how fast and in what direction an object is moving.
For example, a car can have the same mass whether it is moving at 60 mph or standing still, but the velocity is different in both cases.
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Which energy is zero at the extreme position?
Answer: potential energy
Explanation:
Answer : Kinetic Energy
Explanation : Kinetic energy is zero at the extreme position as velocity is zero and potential energy is maximum.
If the rms value is 125 volts, what is the peak value?
A peak-to-peak voltage (VP-P) number from the peak voltage, RMS amperage, or average voltage is displayed using this calculator.
Explain what voltage is.When charged electrons (current) are forced through a conducting loop by the pressure of an electric circuit's power source, they can perform tasks like lighting a lamp. In a nutshell, voltage equals pressure and is expressed in volts (V).
Why is voltage named that?A derived unit for electrostatic field, voltage, & electromotive force is the volt (symbol: V). The Italian physicist Eugenio Volta (1745–1827), who created the voltaic pile, arguably the first chemical battery, is honoured by having his name attached to the volt.
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Suppose that in problem #6 above the length of the block is known to an accuracy of +/-0.3 cm, while the timer is limited to an accuracy of +/- 0.05 seconds.
a. What is the maximum speed you would calculate for this block, based on these error limits?
Maximum error > minimum error
What is the difference between minimum and maximum error?METHOD OF MIN-MAX. The min-max approach is the fundamental mechanism we will utilize to propagate faults. We establish a minimum and maximum value for each of the measures required to determine the final result when using this approach. The minimum and maximum values are (best value – uncertainty) and (best value + uncertainty), respectively.
According to the size of the sample, researchers have recognized three basic categories of error analysis. There are three categories of samples: enormous, particular, and accidental. Offset mistakes routinely result in incorrect readings.
Scale factor mistakes add (or subtract) a proportion or percentage to the correct value.
There is no pattern to random failures.
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Are moles and molecules the same?.
Thus, a mole is an amount of 6.02210^23 particles, whereas a molecule has several atoms of different elements that are chemically connected to one another.
We use a unit called a mole to scale up from the molecular level to the laboratory level. A mole of a substance is the same number of molecules of that substance as there are carbon-12 atoms in precisely 12 g of the element. Chemists employ the mole, a very significant unit of measurement.
Like a dozen eggs means twelve eggs, having a mole of anything indicates you have 602,214,076,000,000,000,000,000 (equals to 6.02210^23) of that thing. For extremely small objects like atoms, molecules, or other particles, chemists must quantify using moles.
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After landing on Mars, you drop a marker from the door of your landing module and observe that it takes 2.1 ss to fall to the ground. When you dropped the marker from the module door on Earth, it took 1.3 ss to hit the ground.
What is the magnitude of the acceleration due to gravity near the surface of Mars?
Express your answer with the appropriate units.
The magnitude of the acceleration due to gravity near the surface of Mars considering the time that takes the marker to fall to the ground is: 3.75 m/s²
What is free fall?It is when the object or mobile falls from a height (h) with a positive acceleration equal to the gravity, describing a vertical rectilinear travel.
The free fall formula and the procedure we will use is:
h = (g * t²)/2
Where:
t = time takenh = height traveledg = acceleration due to gravityInformation of the problem:
t(Earth)=1.3 sst(Mars) = 2.1 ssg(Earth) = 9.8 m/s²h = ?g(Mars) = ?Applying the height formula with the time of the fall on Earth we get:
h = (g * t²)/2
h= (9.8 m/s² * (1.3 s)²)/2
h=(9.8 m/s² * 1.69 s²)/2
h= 16.562 m/2
h=8.281 m
Applying the height formula, with the time of the fall on Mars and clearing the gravity we get:
h = (g * t²)/2
g= (h*2)/ t²)
g(Mars)= 8.281 m *2/(2.1 s) ²
g(Mars)= 16.562 m/4.41 s²
g(Mars)= 3.75 m/s²
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There is a child riding a wagon being pulled down the street. If someone said the child was not moving, what reference point could they have been using?
The wagon is the correct frame of reference to be used here.
What is a frame of reference?We have to note that the idea of relativity was first introduced to us by the man Albert Einstein. We have to note that the frame of reference would have to be the object that is moving.
Looking at the question, we have been told that; there is a child riding a wagon being pulled down the street then we are also told that the child was not moving. Hence the wagon that moves is the correct frame of reference.
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What two factors depend on gravity?.
The two factors that depend on gravity are the mass of the objects and the distance between them.
The two factors that depend on gravity are the mass of the objects and the distance between them. The more massive an object is, the stronger its gravity will be.
The farther apart two objects are, the weaker the force of gravity between them will be. This is why gravity is stronger on the surface of a massive planet like Earth than it is on a smaller moon or asteroid.
Similarly, the gravity between two large objects like stars will be weaker than the gravity between two small objects like electrons.
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How many grams are in 1 mole of aspartame?.
We are aware that there are 6.02*10^23 molecules in 1 mole of aspartame molecules.
To translate between mass and particle count, utilize the mole idea. 6.02*10^23 units of a material make up one mole (such as atoms, molecules, or ions). Avogadro's number or Avogadro's constant is the quantity 6.02*10^23.
The mass of one atoms, molecules, or formula units make up one mole of a substance, which is known as the molar mass of that substance. This value is represented in grams per mole.
Avogadro's number can be used to convert between molecules and moles by multiplying or dividing:
The amount of moles must be multiplied by 6.02 x 10^23 to convert to molecules.Divide the number of molecules by 6.02 x 10^23 to convert it to moles.Learn more about Mole Visit: brainly.com/question/30236487
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How will the electrostatic force be changed if the distance between two electric charges is doubled and one of the charges is tripled?.
The product of the charges and the square of the separation distance have opposite effects on the electrostatic force. The force would be tripled if one of the charges were tripled.
The force would be reduced by nine times with a tripling of the distance.
When there is a doubled distance between two charges, what will happen to the electrostatic force?As the distance between the two charges increases by a factor of four, so does the magnitude of the force. As a result, the attraction or repulsion decreases to one-fourth of its original value if the distance between the two charges is doubled.
If the distance between two charges is tripled, what happens to the force between them?The force between two charged objects is inversely proportional to the square of their distance, according to Coulomb's Law. As a result, the force will weaken by a factor of 9 if the distance is tripled.
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Who is the father of gravity?.
Isaac Newton
Isaac Newton formulated gravitational theory in 1665 or 1666 after watching an apple fall and asked why the apple fell straight down, rather than sideways or even upward.
SoOoOo,
Issac Newton :)
What are the examples of renewable and nonrenewable resources?.
A renewable resource, also known as a flow resource, is a resource that gets replenished naturally to replace the portion depleted by usage and consumption.
Examples: solar energy, tidal energy, wind energy, hydro power, bio-energy etc.
A non-renewable resource is a natural resource that cannot be readily replaced by natural means at a pace equal to keep up with consumption rate.
Examples: fossil fuels, natural gas, nuclear energy, natural gas etc
What is Newton's 2nd law measured in?.
Newton's second law is measured in force. The required magnitude of force can be computed by taking the product of mass and acceleration of any body.
Mathematically, F = m a, where, F is the force, m is mass, a is acceleration.
In the above relation, force and acceleration are vectors.
Second law can also be explained as the rate of change of momentum which is directly related with that of applied force.
F ∝ m (v - u )/t
where, v is final velocity
u is initial velocity
m is mass
t is time
F is applied force
Thus, Newton's second law is measured in force.
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How do you find the acceleration of a ball down a ramp?.
To find acceleration of a ball down a ramp you have to:
Determine the gravity value. If the object is on the earth it would be 9.8Determine the angle of the field with the horizontal field.Calculate the acceleration by multiply gravity with sinus angle.What is acceleration?Acceleration is a condition where the object are moving in different velocity each time where the value of difference has to be positive. Basic formula for velocity is ΔV : t. The opposite of acceleration is deceleration where the first velocity is higher than the second.
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Help answer these 3 questions thank you
According to the law, when two objects collide in a closed system, their total kinetic energy before the collision and their total kinetic energy after the collision are equal.
How does the overall momentum of two objects change before and after a collision?According to the law, when two objects collide in a closed system, their total kinetic energy before the collision and their total kinetic energy after the collision are equal. Although the total momentum must not fluctuate, the momentum of each individual object may change.In a collision between two objects, the total momentum before and after the collision are equal (in the absence of external forces). The conservation of momentum is embodied in this.In a collision between two objects, the total momentum before and after the collision are equal (in the absence of external forces). The conservation of momentum is embodied in this.To learn more about momentum refer to:
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Simon made a long rod by attaching two rods P and Q, each made of a different
metal. He stuck eight identical iron blocks on the long rod at equal intervals, using
the same amount of wax. He lit a candle and placed it at its centre. The setup is
shown below.
Which of the options indicates that the rate of heat conduction of rod P is higher
than that of rod Q? (Note: The number on the blocks in the images below represent
the order in which the blocks fall. For example, 1 means that block fell off first.)
The option that indicates that the rate of heat conduction of rod P is higher than that of rod Q is C.
The correct option is C.
What is heat conduction?Conduction is the process through which heat is transferred from an object's hotter end to its colder end.
The term "thermal conductivity" refers to an object's capacity to transfer heat; it is represented by the letter k. Along a temperature gradient, heat flows naturally.
Considering the given scenario,;
To show that heat is conducted faster in P than in Q, most of the metal rods in P will fall off earlier than those in Q.
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from your finger pulse recording, is there any way to determine diastolic pressure? could a finger pulse measurement ever replace the stethoscope in determining diastolic pressure?
No, there is no way to determine diastolic pressure from a finger pulse recording.
What is diastolic pressure?Diastolic pressure is the bottom number of the blood pressure reading and is the measure of pressure in the arteries when the heart relaxes and fills with blood. It is the pressure that remains in the arteries between beats when the heart is filling with blood. When the heart beats, it contracts and pumps blood into the arteries, causing an increase in pressure, known as systolic pressure. The diastolic pressure is the pressure in the arteries as the heart is filling with blood between each beat.
No, there is no way to determine diastolic pressure from a finger pulse recording. A finger pulse measurement cannot replace the stethoscope in determining diastolic pressure because the stethoscope is a much more accurate and reliable tool for measuring diastolic pressure.
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