Some descriptive statistics for a Set of test scores are shown above for this test a certain student has a standardized score of z=-1.2 what score did the student receive on the test

Answers

Answer 1

Complete Question

The complete question is shown on the first uploaded image

Answer:

The score of the student is  x = 779.42

Step-by-step explanation:

Generally we can mathematically represent the z-score as

         [tex]z = \frac{x - Mean}{ stDev}[/tex]

Here x is the score of the student

substituting 1045.7 for the Mean, 221.9 for the stDev and -1.2 for z we have  

          [tex]-1.2 = \frac{x - 1045.7 }{ 221.9}[/tex]

=>       [tex]-266.28 = x -1045.7[/tex]

=>     x  =  -266.28 + 1045.7

=>     x = 779.42

Some Descriptive Statistics For A Set Of Test Scores Are Shown Above For This Test A Certain Student
Answer 2

The student scored 779.42 for him to have a z score of - 1.2;

z score is used to determine by how many standard deviations the raw score is above or below the mean.

The z score is given by:

[tex]z=\frac{x-\mu}{\sigma/ } \\\\where\ x\ is\ raw\ score,\mu\ is\ mean, \sigma\ is\ standard\ deviation[/tex]

Given that μ = 1045.7, σ = 221.9 Hence for z = -1.2:

[tex]-1.2=\frac{x-1045.7}{221.9} \\\\x=779.42[/tex]

The student scored 779.42 for him to have a z score of - 1.2;

Find out more on z score at: https://brainly.com/question/25638875


Related Questions

Move the horizontal and vertical sliders some more to stretch the image of the triangle. As you move the
sliders, observe what happens to the interior angles of each triangle. Based on your observations, can you say
that stretches preserve angle measurements?

Answers

Answer:

No, stretches do not preserve angle measurements. A stretch in either the horizontal or the vertical direction changes the interior angles.

Step-by-step explanation:

PLATO

Mark me brainliest plz :))

Answer:

No, stretches do not preserve angle measurements. A stretch in either the horizontal or the vertical direction changes the interior angles.

Step-by-step explanation:

Myra spends $5.70 a day on food and drink during the school year She skips the weekends . How much does she spend for the week?

Answers

Answer:

57$

Step-by-step explanation:

5.70 x 2 for both food and drink

the do 11.4 (the answer for the 1st step) x 5 for the week days giving you the answer of 57$

Answer:

$57 dollars

Step-by-step explanation                                                                                           Don't have one but i took the test and got it right

LaVilla is a village in the Italian Alps. Given its enormous popularity among Swiss, German, Austrian, and Italian skiers, all of its beds are always booked in the winter season, and there are, on average, 1465 skiers in the village. On average, skiers stay in LaVilla for 11 days. How many new skiers are arriving - on average - in LaVilla every day

Answers

Answer:

There are approximately 133 new skiers arriving every day

Step-by-step explanation:

Total number of skiers = 1465

time of stay for skiers = 11 days

How many new skiers are arriving on average = ???

To keep the average number of skiers available at each time constant, the number of skiers coming in and going out are fairly constant, and this is gotten by using the flow rate formula.

flow rate = amount available  ÷ flow time

flow rate = 1465 ÷ 11

flow rate = 133.18

flow rate = 133

∴ There are approximately 133 new skiers arriving every day

A bicycle rental company charges $14 for the first hour and $5.00 for each additional hour. Determine the maximum number of
hours you can rent a bike if you only have $79.
Answer:____hours

Answers

Answer:

13 Hours

Step-by-step explanation:

subtract 14 from 79. That leaves you with 65 dollars. Divide 65 by 5 and you get 13.

Answer: 14 hours

Explanation:

79 - 14 = 65 (1 hour passed)

65/5 = 13 (13 hours passed)

13 hours + 1 hour = 14 hours

What is 0.5x10^2??????????????????

Answers

Answer:

0.5 x 10^2 = 50

Step-by-step explanation:

Hope this helped

Brainliest?

Use the commutative property to rewrite the following expression.
-16 · y

Answers

Commutative property of multiplication is just mixing up the order but the answer stays the same.
Examples: 4 + 5 + 6 = 6 + 4 + 5 ; (a)(d) = (d)(a) ;

Answer:
(-16)(y) or/and (y)(-16)

simplify 4-8÷2+3

please help

Answers

Answer:

4-8÷2+3=3

Step-by-step explanation:

Divide the numbers: 8/2=4

return to the problem: 4-4+3=3

Answer: 3

Answer:

it is 1

Step-by-step explanation:

because 4-8=-4\2=-2+3=1

please help me with math

Answers

Answer:

Given: P.E=6.0J Height (h)= 3m g=9.8m/s^2

mass=?

Formula: P.E=mgh

m=P.E/gh

Application: To find mass of an apple

Answer+unit= 0.2 kg

Step-by-step explanation:

m=P.E/gh

= 6kgm^2/s^2 ÷ 9.8m/s^2*3m

=0.2kg

10 is 8% of a, and 5 is 4% of b. c equals b/a. What is the value of c?

Answers

Answer:

21

Step-by-step explanation:

A = 125
B = 125

B/A = 125/125
B/A= 1

C = 1

Subtract -3 – (-7). who will be first to answer....

Answers

Answer:

Its 4

Step-by-step explanation:

Because it is

Answer:

4

Step-by-step explanation:

1) First, distribute the negative sign to the -7. Because of this, the -7 will become a positive 7.

Equation: -3+7

2) Next, whenever there are two different signs, we are supposed to subtract the bigger number (7) with the smaller number (3).

Equation: 7-3=4

3) Finally, assign the greatest number sign. in this case, 7 is the greater number, and the 7 is a positive number; therefore, it will be a positive 4.

Hope this helps!

A parachute is describing at rate of 28 feet per minute find the total change of altitude of the parachuter after 4 mins

Answers

A parachute is describing at rate of 28 feet per minute find the total change of altitude of the parachuter after 4 mins.

112 feet

quotient of twice a number and 6 is 42

Answers

Answer:

[tex]n = 126[/tex]

Step-by-step explanation:

First let's model this into an equation.

Twice a number is [tex]2n[/tex], and that divided by 6 is [tex]\frac{2n}{6}[/tex]. That's equal to 42, so we have [tex]\frac{2n}{6} = 42[/tex].

Now we can simplify this equation by isolating n on one side of the equation.

Multiply both sides by 6:

[tex]\frac{2n}{6} \cdot 6 = 42\cdot 6\\\\2n = 252[/tex]

Divide both sides by 2:

[tex]2n \div 2 = 252\div 2\\\\n = 126[/tex]

Hope this helped!

solve this question

Answers

Answer: a=56/15

Step-by-step explanation:

For this problems, it is important ot know how to read ratios. They can be read as fractions. Knowing this, we would use proportions to solve.

[tex]\frac{3a}{7} =\frac{8}{5}[/tex]                      [cross multiply]

[tex]15a=56[/tex]                  [divide both sides by 15]

[tex]a=\frac{56}{15}[/tex]

Now, we know that a=56/15.

Answer:

3 11/15

Step-by-step explanation:

3a : 7 : : 8 : 5

= 3a/7 = 8/5

=15a = 56

= 56/15 = 3 11/15

Which expression is equivalent to 5/6 / 7

Answers

Answer:

can you help me/

Step-by-step explanation:

If you decide to study 4 hours more a week during your junior year (32 weeks) with the expectation of getting $2,000 scholarship to college how much is your study time worth per hour

Answers

Answer: You will get $2,000 for 128 hour, or 2,000/128 = $15.625 per hour study time.

Step-by-step explanation:

We will give the solution of the following problem:

"If you decided to study for four hours a week during your junior year (32 weeks) with the expectation of getting a $2,000 scholarship to college, how much is your study time worth per hour?"

In 32 weeks you will have total of 4*32 = 128 study hours.

You will get $2,000 for 128 hour, or 2,000/128 = $15.625 per hour study time.

Ben drank 1/5 pitcher of lemonade. Tonya drank 1/2 of the lemonade. How much lemonade did they drink together?

Answers

Answer:

7/10ths of the picture has been digested.

Step-by-step explanation:

Let's divide this into tenths.

One fifth out of ten is equal to two, since 10/5 = 2. A half of ten is five, because 10/2 = 5. Adding five and two together gives us 7/10ths, which can not be reduced to a smaller amount.

solve: 5y – 3.5 = 10.5

Answers

Answer:2.8

Step-by-step explanation:add 3.5 to the 10.5 which equals 14 then you divide 5 by 14 to get the y alone and it equals 2.8

5y-3.5=10.5
+3.5 +3.5
5y=14
5y/5= y
14/5= 2.8
Y=2.8

1/2 - 1/8

Answers should be in format 5/2 or 2/5. No decimals or mixed numbers

Answers

Answer:

[tex]\frac{3}{8}[/tex]

Step-by-step explanation:

[tex]1/2 - 1/8\\\frac{1}{2}-\frac{1}{8}\\\\\mathrm{Least\:Common\:Multiplier\:of\:}2,\:8:\quad 8\\\\\mathrm{Adjust\:Fractions\:based\:on\:the\:LCM}\\\frac{1}{2}=\frac{1\times\:4}{2\times\:4}=\frac{4}{8}\\\\=\frac{4}{8}-\frac{1}{8}\\\\=\frac{4-1}{8}\\\\=\frac{3}{8}[/tex]

I need to find the measurement of AEB please help me!

Answers

Triangle BEC is an isosceles triangle.

The angles opposite the congruent sides are equal

x = measure of missing angle

180 = 54 + 2x

Subtract 54 from both sides

126 = 2x

Divide both sides by 2

63 = x

angle EBC and angle C = 63 degrees

Angle EBC and angle EBA are supplementary.

This means they add up to 180 degrees

180 = 63 + EBA

Subtract 63 from both sides

117 = EBA

the measure of a triangle = 180

Therefore,

The measure of angle AEB = 180 - (40 + 117) = 23 degrees

Answer:

104

Step-by-step explanation:

cual es el valor absoluto de -|-42|​

Answers

Answer:

-42

Step-by-step explanation:

Jayden has 3/4 of a bag of dog food. his dog eats 1/10 of a bag per week. how many weeks will the dog food last. plzzzz send help I'm already failing

Answers

Answer: 7.5 weeks


Explanation:

Brainliest please

Need help with som math

Answers

Answer:

60

Step-by-step explanation:

3(3)²-2³-2³-5

81-8-8-5

81-16-5

81-21

60

your answer would be sixty

Suppose there are 11 freshman, 7 sophomores, 13 juniors, and 15 seniors running for the offices of president, vice president, and secretary. If no person can hold more than one office, in how many different ways could these people be elected to these positions if the president must be a senior and the secretary must be a freshman

Answers

Answer:

7,260 ways

Step-by-step explanation:

Here, we are told that the president must be a senior and the secretary must be a freshman.

Now for the post of President, we have 15 choices to pick from

For the post of secretary, we have 11 choices to pick from

Now the last position, the vice president

Firstly , we have 14 seniors( 1 already president), 10 freshmen(1 already secretary) , 6 sophomores and 13 juniors

So the total number of choices will be;

14 + 10 + 7 + 13 = 44

So the number of ways will be;

44 * 15 * 11 = 7,260 ways

All right angles are congruent. Converse Inverse: Contrapositive

Answers

Answer:

No not all right angles are congruent.

Step-by-step explanation:

In which of these situations do the quantities combine to make 0?
O A. A bird flies 25 feet up in the air. It then flies 25 feet across to its
nest.
O B. Veronica receives $21 for babysitting. She then spends $21 on a
new shirt.
O C. A player in a game earns 4 points for getting an answer right. She
then earns 4 points for making it around the board,
O D. A car is filled with 10 gallons of gas, Half of the 10 gallons are
then used on a day's drive.​

Answers

Answer:

b is the correct answer

Option B situations do the quantities combine to make 0.

What are arithmetic operators?

Arithmetic operations are a set of four basic operations to be performed to add, subtract, multiply or divide two or more quantities. These are also known as mathematical operations.

Addition

The addition is a basic mathematical skill of finding or calculating the total of two or more numbers, or we can say in simple words adding things together. It is denoted by the symbol ‘+’.

Subtraction

The subtraction arithmetic operation shows the difference between two numbers. It is denoted by the symbol ‘-‘. Subtraction is mostly used to find out what is left when things are taken away.

Multiplication

The repeated addition is known as multiplication. It is represented by the symbol ‘×’. Multiplication as an arithmetic operation helps us to find out the total when a number is repeating itself a number of times.

Division

The division is an act of dividing something into equal parts or groups. It is one of the four basic arithmetic operations which gives a fair result of equal sharing.

Option A :

Given

A bird flies 25 feet up in the air. It then flies 25 feet across to its

nest.

So, total distance flown by bird = 25 + 25 = 50 feet

Which do not combine to 0.

Option C :

A player in a game earns 4 points for getting an answer right. She

then earns 4 points for making it around the board.

Hence, total points earned = 4 + 4 = 8

Which do not combine to 0.

Option D :

A car is filled with 10 gallons of gas, Half of the 10 gallons are

then used on a day's drive.​

= 10 - [tex]\frac{1}{2}[/tex] × 10

= 10 - 5

= 5

Which do not combine to 0.

Option B :

Veronica receives $21 for babysitting. She then spends $21 on a

new shirt.

So net amount left with Veronica = 21 - 21 = 0

Hence, it combines to zero.

Find out more information about arithmetic operators here

https://brainly.com/question/13585407

#SPJ2

What are the minimum and maximum values of x, for which x3 + x2 – 6x ≥ 0? minimum = –3, maximum = 0 minimum = 0, maximum = 2 minimum = –3, no maximum minimum = 2, no maximum Please answer quickly

Answers

Answer: Option C.

Step-by-step explanation:

The given inequality is

[tex]x^3+x^2-6x\geq 0[/tex]

Taking x common, we get

[tex]x(x^2+x-6)\geq 0[/tex]

Splitting the middle term, we get

[tex]x(x^2+3x-2x-6)\geq 0[/tex]

[tex]x(x(x+3)-2(x+3))\geq 0[/tex]

[tex]x(x+3)(x-2)\geq 0[/tex]

Related equation is

[tex]x(x+3)(x-2)=0[/tex]

[tex]x=-3,0,2[/tex]

These three points divide the number line in 4 parts.

Interval       Sign of [tex]x(x+3)(x-2)\geq 0[/tex]      Statement

(-∞,-3)              [tex](-)(-)(-)=(-)[/tex]                           False      

(-3,0)              [tex](-)(+)(-)=(+)[/tex]                            True  

(0,2)              [tex](+)(+)(-)=(-)[/tex]                              False      

(2,∞)              [tex](+)(+)(+)=(+)[/tex]                              True  

So, the solution set is (-3,0) ∪ (2,∞).

Thus, minimum value is –3 and no maximum value.

Therefore, the correct option is C.

Answer:

minimum = –3, no maximum

Step-by-step explanation:

The other guy here was completely correct, but just in case it assures anyone's doubts:

Scenario:You are a Geographic Information System (GIS) specialist who normally works at the Public Works Planning office.You are directed to report to the Incident Command Post (ICP) and have been assigned to the Planning Section Chief and will report to the Chief.You will be producing maps to display potential flooding impacts in the city and county.What NIMS Management Characteristics are you supporting? Select the two characteristics that apply.a. Integrated Communicationsb. Establishment and Transfer of Commandc. Chain of Command and Unity of Commandd. Accountabilitye. Dispatch/Deploymentf. Information and Intelligence Management

Answers

Answer: Chain of Command and Unity of Command ; Information and Intelligence Management

Step-by-step explanation:

Chain of Command typically loooks into an organization's hierarchical structure while unity of commands simply has to do with the reporting to ones designated supervisor.

Also, because maps are being produced, there'll be with the gathering, assessing, analyzing, sharing, and managing intelligence.

Therefore, the NIMS Management Characteristics that'll be supported are Chain of Command and Unity of Command ; Information and Intelligence Management.

The NIMS management characteristics that are mostly supported are:

A chain of Command is a unity of command.information and intelligence management.

The chain of command and unity of command is an overall hierarchy of the orpganization, while the unity of command says that the entire chain is always reporting to the similarly designated supervisor.

The information and intelligent management help the owner to take according to decisions forward premises of the information system.

As per the GIS when the maps have the process for the information would be gathering the information, assessing it, analyzing it, sharing the information to the delegated conducting the field, and then managing the intelligence of the information.

Thus, the NIS characteristics are chain and unity of command, and information and intelligence management.

To know more about geographic information system, refer to the link:

https://brainly.com/question/7551618


Given the function f(x) = -5|x + 1|
+ 3, for what values of x is f(x) = -12?

Answers

Answer:

2 and -4

Step-by-step explanation:

-5|x + 1| + 3 = -12

-5|x + 1| = -15

|x + 1| = 3

x + 1 = 3    /      x + 1 = -3

x₁ = 2        /      x₂ = -4

Avas credit card balance is $64 if she makes a $25 payment then charges $79 find the balance of the card.

Answers

Answer:

6000 - 2500 = 3500

Ahora 3500 - 500 = 3000

ENTONSES la respuesta es 3000

Step-by-step explanation:

what is the value of x in the equation as a fraction 2(5x+4)=17

Answers

Answer:

x= 9/10

Step-by-step explanation:

2(5x+4)=17

Distribute

10x +8 = 17

Subtract 8 from each side

10x+8-8=17-8

10x = 9

Divid by 10

10x/10 = 9/10

x= 9/10

Divide both sides by 2:

5x + 4 = 8.5

Subtract both sides by 4:

5x = 8.5 - 4 = 4.5

Divide both sides by 5:

x = 4.5 / 5 = 0.9  or  9/10

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