The null we are interested in testing here is that the coefficients on age and age^2 are jointly zero. So, we would need to run a restricted version of the regression above where these two variables are omitted and calculate.
Given:
what other regression do you need to run to test the null hypothesis that, holding other factors fixed, age has no effect on sleeping.
The null we are interested in testing here is that the coefficients on age and age^2 are jointly zero.
[tex]F = R^2_{ur}-R^2_r / q / 1-R^2_{ur} (n-k-1)[/tex]
Therefore the null we are interested in testing here is that the coefficients on age and age^2 are jointly zero. So, we would need to run a restricted version of the regression above where these two variables are omitted and calculate.
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What is the answer to this question
Answer:
negative
Step-by-step explanation:
because the line falls from left to right, the line has a negative slope. =)
Answer: Negative
Step-by-step explanation:
This line is "going down the stairs," or starting from the upper lefthand side to the bottom righthand side. This means we have a negative slope.
If you need to find the slope;
We will use the "rise over run" method. Starting at (-2, 3) we will count 4 units down and three units right to (1, 1) for a slope of -4/3.
You can see this graph has also shown the change of -4 in the y and the change of 3 in the x.
A survey by the national retail federation found that women spend on average r146.on a saturday lunch. assume the standard deviation is r29.44. find the percentage of women who spend less than r190.00 on a saturday lunch. assume the variable is normally distributed
The percentage of women who spend less than $190.00. Assume the variable is normally distributed is 0.0694 or 6.94%
Given that,
Women spend an average of $146 on a Saturday lunch, according to a national retail federation poll. Suppose $29.44 is the standard deviation.
To find : How many ladies or the percentage of ladies spend less than $190 on a Saturday lunch
P(X < 190) = P(x-μ/σ < 190 -146.21 /29.44)
= P(Z > 1.487)
= 0.0694
So, the proportion of female consumers who spend less than $190 and that the variable has a 0.0694 or 6.94% normal distribution.
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determine the order of the following matrix
-8 -1
8 -2
1 6
8 8
Answer: 4 x 2
Reason:
There are 4 rows and 2 columns.
Please solve 6-11, giving brainliest
Equation:
a) 4 + 3x = 3x- 7 has no solution.
b) 5.4x + 12 = 2(2.7x - 9 ) has no solution
c) 6 + 2.5x = 0.5x - 8 has one solution.
Define equation.A formula that expresses the connection between two expressions on each side of a sign is called equation. Typically, it has a single variable and an equal sign. Like this: 2x - 4 = 2.
Given,
Equations:
a) 4 + 3x = 3x- 7
3x - 3x = -7 -4
0
4 + 3x = 3x- 7 has no solution.
b) 5.4x + 12 = 2(2.7x - 9 )
5.4x + 12 = 5.4x - 18
0
b) 5.4x + 12 = 2(2.7x - 9 ) has no solution
c) 6 + 2.5x = 0.5x - 8
2.5x - 0.5x = -8 -6
2x = -14
x = -7
c) 6 + 2.5x = 0.5x - 8 has one solution.
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Ms.Salgado needs to have her car repaired but does not want to spend more than $375 for the repairs. The mechanic says that the part needed for the repair will cost $100 and the labor will cost an additional $40 per hour. Which inequality below represents the greatest number of hours mechanic can work without exceeding ms. Salgado’s budget?
Answer:
6 hours without exceeding
Step-by-step explanation:
7 hours goes over
100+40x7=380
6 hours is under
100+40x6=340
A line's slope is 9, and its y-intercept is 9. What is its equation in slope-intercept form?
Write your answer using integers, proper fractions, and improper fractions in simplest form.
This image would be used for part c.
Question B: During what interval(s) of the domain is the baseball’s height decreasing the fastest?
Options: A= 6 < x < 8; the slop is the steepest for this interval
B= 8 < x < 10; the slop is the steepest for this interval
C= 6 < x < 10; the slop is decreasing for this interval
D= 6 < x < 12; is where the slope is decreasing
Step-by-step explanation:
it decreases the fastest, where it drops the most feet in the same period of time.
the dots are made in 2 seconds intervals.
between the seconds 6 and 8 the ball drops from 65 ft to 25 ft (a drop of 65 - 25 = 40 ft).
bergen the seconds 8 and 10 the ball drops from 25 ft to 5 ft (a drop of 25 - 5 = 20 ft).
and then between the seconds 10 and 12 the ball drops from 5 ft to 0 ft (a drop of 5 ft).
so, A is the right answer. with 40 ft in 2 seconds the ball is dropping the most (= the fastest) between the seconds 6 and 8. which means the slope is negatively the steepest there = the height is decreasing the fastest.
Graph the line that passes through the given point and has the given slope m. (2,8); m= -1/3
Step-by-step explanation:
Refer to the picture above
Why is triangle area divided by 2?.
To find the area of a triangle, multiply the base area by the height and then divide by 2. Dividing by 2 comes from being able to divide a parallelogram into two triangles. For example, in the illustration on the left, the area of each triangle is equal to half the area of the parallelogram.
What is area of triangle?The area of a triangle is defined as the total space occupied by the three sides of the triangle in a two-dimensional plane.The basic formula for the area of a triangle is half the product of the base and the height, or A = 1/2 × w × h.This formula applies to all types of triangles, including scalene, isosceles, and equilateral triangles. Recall that the base and height of a triangle are perpendicular to each other.The area of a triangle is the area enclosed by the sides of the triangle.The area of a triangle varies from triangle to triangle depending on the length of the sides and the interior angles. The area of a triangle is expressed in square units. B. m2, cm2, in2, etc.Hence, To find the area of a triangle, multiply the base area by the height and then divide by 2. Dividing by 2 comes from being able to divide a parallelogram into two triangles. For example, in the illustration on the left, the area of each triangle is equal to half the area of the parallelogram.
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Two cards are drawn from a well-shuffled deck of 52 cards without replacement. Determine the probability The first card is a face card and the second card is a diamond.
The probability that the first card is a face card and the second card is a diamond is 1/17.
What is probability?Probability simply means the likelihood that a particular event will occur or take place.
Number of face cards = 12
Number of diamonds = 13
Total number of cards in a deck = 52
The probability of getting a face card is 12/52 = 3/13
The probability of getting the diamond will be 13/51
Therefore, the probability of the face card and diamond will be:
= P(face card) × P(diamond)
= 3/13 × 13/51
= 1/17.
The probability is 1/17.
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of the cars sold during the month of july, 85 had air conditioning, 102 had automatic transmission, and 71 had power steering. 6 cars had all three of these extras. 22 cars had none of these extras. 22 cars had only air conditioning, 65 cars had only automatic transmissions, and 31 cars had only power steering. 10 cars had both automatic transmission and power steering. how many cars had air conditioning and automatic transmission but not power steering? a) 30 b) 27 c) 6 d) 4 e) 33 f) none of the above.
27 cars had air conditioning and automatic transmission but not power steering.
What is venn diagram ?A Venn diagram is a diagram that uses circles to show the relationships between things or finite groups of things. Intersecting circles have one thing in common, but non-intersecting circles do not have these features.
Venn diagrams help visualize the similarities and differences between two concepts. They have long been recognized for their usefulness as educational tools. Venn diagrams have been used as part of introductory logic curricula and in elementary school planning around the world since the mid-20th century.
Venn diagrams help show how different concepts and elements intersect. At a glance, you can see how things are similar, how they differ, and where and how they overlap. The center of a Venn diagram (the intersection of two or more circles) often represents a connection or main idea that can be decomposed into various other circles, and labels on the outer part are more common than labels in the center. is clear. .
Calculationcalculation has been attached below .
27 cars had air conditioning and automatic transmission but not power steering
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3. Find the measure of the angle indicated.
Answer:
∠ D = 94°
Step-by-step explanation:
the exterior angle of a triangle is equal to the sum of the 2 opposite interior angles.
∠ CBY is an exterior angle of the triangle, then
∠ C + ∠ D = ∠ CBY , that is
49° + ∠ D = 143° ( subtract 49° from both sides )
∠ D = 94°
there are 15 servings in a 10.5-ounce bottle of barbecue sauce. how many ounces are in a serving
There are 1.42 ounces are in a serving of barbecue sauce.
What is the fundamental principle of multiplication?Multiplication is the mathematical operation that is used to determine the product of two or more numbers. If an event can occur in m different ways and if following it, a second event can occur in n different ways, then the two events in succession can occur in m × n different ways.
We have been given that there are 15 servings in a 10.5-ounce bottle of barbecue sauce.
Thus, 15 servings = 10.5-ounce bottle of barbecue sauce.
One ounce bottle of barbecue sauce = 15/10.5 x 1
= 1.42
Therefore, there are 1.42 ounces are in a serving of barbecue sauce.
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I would like to know what the equation would be.
I forgot how to do this stuff
a coffee machine dispenses normally distributed amounts of coffee with a mean of 12 ounces and a standard deviation of 0.2 ounce. if a sample of 9 cups is selected, find the probability that the mean of the sample will be greater than 12.1 ounces. find the probability if the sample is just 1 cup.
Answer:i don't know really im just another student and i'm just doing this for the points my guy so don't be mad if you get a bad response
Step-by-step explanation:
1. I have no idea
Here is a function, double numbers (int x), what data type will this function take in?.
The data type this function take is int.
What is data type?Data type is an attribute of a piece of data that instructs a computer how to interpret its value. Example data type is,
integer (int)boolean (bool)double (double)float (float)string (str)In the question, the function is double numbers (int x). The parameter used in this function is int. Even if it try to pass the double value into the function it will take an integer value corresponds to double value and the function always return the data to integer.
Thus, the function only take integer (int) data type.
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14. What is the
solution to 34x + 95 = 3(14x + 9)?
Answer:
Solution
x=17/2
Step-by-step explanation:
Answer: x = 17/2
Step-by-step explanation: distribute 34x+95=3(14x+9)
subtract from both sides 34x+95−95=42x+27−95
34
What is the slope of the line that passes through the points ( − 6 , 5 ) and ( − 3 , 20 ) ? Write your answer in simplest form.
Answer:
slope = 5
Step-by-step explanation:
calculate the slope m using the slope formula
m = [tex]\frac{y_{2}-y_{1} }{x_{2}-x_{1} }[/tex]
with (x₁, y₁ ) = (- 6, 5 ) and (x₂, y₂ ) = (- 3, 20 )
m = [tex]\frac{20-5}{-3-(-6)}[/tex] = [tex]\frac{15}{-3+6}[/tex] = [tex]\frac{15}{3}[/tex] = 5
Help please!
What is the rate of change of the function?
The slope of the line m is -2 if the line passes through (4, -3) and (0, 5) the answer is -2.
What is the slope?The ratio that y increase as x increases is the slope of a line. The slope of a line reflects how steep it is, but how much y increases as x increases. Anywhere on the line, the slope stays unchanged (the same).
[tex]\rm m =\dfrac{y_2-y_1}{x_2-x_1}[/tex]
From the graph:
(4, -3) and (0, 5)
The slope of the line m = (5+3)/(-4)
The slope of the line m = -2
Thus, the slope of the line m is -2 if the line passes through (4, -3) and (0, 5) the answer is -2.
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work out the area of a circle with diameter of 14 give your answer in pi
Answer:
Area is probably around 153.94
Step-by-step explanation:
Answer:
49π or 153.93804
Step-by-step explanation:
The formula for area of a circle is Pi * radius^2. The radius is half of the diameter, so the radius is 7. We then square 7, getting 49, and multiply that by pi, getting us 49π or 153.93804
Bill's bank charges $27.50 for overdraft fee and $3.50 for using an ATM out of network. Bill has $25 in his checking account at First Bank. Later that day he had a check clear his account for $50 and then added an ATM debit of $80. How much does Bill owe the bank. Explain your answer
Total sum that Bill owe the bank is $36
Given,
The overdraft fee charged by the bank = $27.50
The charge for using an ATM out of network = $3.50
The amount in the checking account = $25
The amount for check clearing = $50
ATM debit amount added = $80
We have to find the money Bill owe the bank;
Overdraft;-
A bank will grant a customer an overdraft when their account balance is 0 so they may pay their payments and other expenses.
Here,
Total sum in bank = 25 + 50 - 80
Total sum in bank = -5
Then,
Total Sum he owe = 5 + 27.5 + 3.5
Total sum he owe = $36
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Which of the following expressions
or equations reflects "x squared
multiplied by ten equals one hundred"?
A) 10x²-100
B) 10x²+100
C) 10x²=100
D) 100 -10x²
The expression that reflects x squared multiplied by ten equals one hundred is option C) 10x²=100.
The following components make up an expression in mathematics:
Constant: It has a predetermined numerical value.A variable does not accept any fixed values. According to the requirement, values are assigned.The terms "constants," "variables," or "constants multiplied by variable" are all acceptable (s). An expression's terms are separated by a "+" or "" sign.Operators: The four operations of addition (+), subtraction (-), multiplication (-), and division (-), also known as operators, are used to combine the terms of an expression.Mathematical expressions consist of at least two numbers or variables, at least one arithmetic operation, and a statement.
It's possible to multiply, divide, add, or subtract with this mathematical operation. An expression's structure is as follows:
Expression: (Math Operator, Number/Variable, Math Operator)
Hence, the expression that reflects x squared multiplied by ten equals one hundred is option C) 10x²=100.
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2/4= =
fraction present decimal
Answer:
0.5
Step-by-step explanation:
2/4
= 1/2
Multiply 5 to both numerator and denominator.
= 1/2 x 5/5
= ( 1 x 5 )/( 2 x 5 )
= 5/10
= 0.5
systems of linear equations and inequalities
solve the system of equations.
x-y=4
2x+y=5
Answer:
∴ x = 1, y = -3
Step-by-step explanation:
x - y = 4 ------ equation (1)
2x + y = 5 ------ equation (2)
Add equations (1) and (2):
(2x + y) + (x - y) = 5 - 4
2x + y - x - y = 1
∴ x = 1
Substitute x = 1 into equation (1):
1 - y = 4
-y = 3
∴ y = -3
You are designing a candle-making kit. Each kit will contain 25 cubic inches of candle wax and a mold for making a model of the pyramid-shaped building at the Louvre Museum in Paris, France. You want the height of the candle to be 2 inches less than the length of each side of the candles square base. What should the dimensions of your candle mold be?
A spinner has four sections A,B, C and D.
Pls solve this asap.
Answer:
0.35
Step-by-step explanation:
since there are only 4 sides the probability of all 4 should equal 1
0.2+0.3+0.15
0.5+0.15
0.65
1-0.65
0.35 is the probability of D
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Complete the table.
I
Y=x+9
-2
-1
0
1
2
Answer:
See step by step explanation below
Step-by-step explanation:
x -2 -1 0 1 2
y 7 8 9 10 11
Example:
x + 9
-2 + 9
11
) find the approximations t10 and m10 for 2 15 e1/x dx. 1 (round your answers to six decimal places.)
For integral 2 15 e1/x dx. 1, the approximate value of T10 = 27.05 and M10 = 30.29
In this question, we need to find the approximations T10 and M10 for 2 15 e1/x dx. 1
i.e., To find: Integral approximate using Trapezoid rule and midpoint rule
f(x) = 15e^(1/x)
a = 1, b = 2, bx = 1/10
T10 = bx/2 [f(1) + 2f(1.1) + 2f(1.2) + 2f(1.3) + . . . + f(2) ]
= 1/20[15e + 30e^(1/1.1) + 30e^(1/1.2) + . . . + 15e^(1/2)]
= 1/20 * 30 [(e/2) + e^(1/1.1) + e^(1/1.2) + . . . + (e^(1/2) / 2)]
= 1.5 * 18.0362
= 27.05
Now we find M10
M10 = Δx [f(1.05) + f(1.15) + . . . + f(1.95)]
= 1/10 [15e^(1/1.05) + 15e^(1/1.15) + . . . + 15e^(1/1.95)]
= 15/10 [e^(1/1.05) + e^(1/1.15) + . . . + e^(1/1.95)]
= 1.5 * 20.1909
= 30.29
Therefore, for integral 2 15 e1/x dx. 1, the approximate value of T10 = 27.05 and M10 = 30.29
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hi so were learning to do multi step equations i dont get it so could you tell how to do it and make really easy i am in the lower class
Answer:
Step-by-step explanation:
First, Multiply to clear any fractions or decimals, this is OPTIONAL THOUGH, IF YOU DO NOT MIND WORKING WITH THEM
Then, Simplify each side by clearing parentheses (e.g. (5x6) and combine the like terms (e.g. 5 and 2, -3 and -92)
Use the properties of equality to isolate the variable
Check the solution
Help me solve the word problem below. Will mark brainliest.
Answer:
Step-by-step explanation:
a man is in a boat that is floating 175 feet from the base of a 200 foot cliff. what is the angle of depression between the cliff and the boat?
A boat is moving 175 feet from the base and a man is in the boat. The height of cliff is 200 feet. We need to find the angle between the cliff and the boat.
We have a right angled triangle where base is 175 ft and height is 200 ft.
We know that tan θ = opposite / adjacent
= 200 / 175
So θ = tan ^-1 (200 / 175)
So θ = 48.8 degree
