On a standardized exam, the scores are normally distributed with a mean of 250 and
a standard deviation of 50. Find the 2-score of a person who scored 375 on the exam.

Answers

Answer 1

Answer:

the z-score is within 3

Step-by-step explanation:

first you got to take the standard deviation and add it to the mean since 375 is greater than 250. so the equastion would be

250+50=300+50=350+50=40

so the z-score for the value of 375 is within 3      

Answer 2

Answer: 2

Step-by-step explanation:

z=\frac{x-\mu}{\sigma}

z=

σ

x−μ

z-score formula

z=\frac{300-250}{25}

z=

25

300−250

Plug in values

z=\frac{50}{25}

z=

25

50

Subtract

z=2

z=2

Divide

\text{They scored 2 standard deviations above the mean.}

They scored 2 standard deviations above the mean.


Related Questions

Hello! Would appreciate help!!

Find the value of x. Round to the
nearest tenth.

Answers

Answer:

17.14

Step-by-step explanation:

tan 35 = 12/x

x = 12/ tan 35

= 17.14

help asap pleaseeee !!!!!!

Answers

Answer:

C. ⅓ × (8 + 7) + 12

Step-by-step explanation:

Let's translate each statement given to numerals and symbols first:

Twelve => 12

One-third => ⅓

Sum of 8 and 7 => (8 + 7)

Representing this statement altogether will be:

⅓ of (8 + 7) = ⅓ × (8 + 7)

If 13 is added, we would get:

⅓ × (8 + 7) + 12

Hi could some PLEASE help me !!!!

Answers

Answer:

3x=78+x-2

Step-by-step explanation:

What percent of the data is between 30 and 50 on the number line?

Answers

Answer:

20 percent

Step-by-step explanation:

50 - 30 = 20 percent

it is 20!! because 50-30=20

If Joe earns $38,000 a year: 
1. How much does he make a month?
2. If his budget per month is $3,200, can he afford that on his salary?

Answers

1. Approximately $3,167 a month
2. No, Joe would be $33 short of his budget

find the cost of 24 piece of shshi from each restaruant

Answers

Answer:

sushi* and there is no picture.

Step-by-step explanation:

Water is coming out of a fountain is modeled by the function f(x)=-x^2+8x+2 where f(x) represents the height, in feet, if the water from the fountain at different times x, in seconds

Answers

The answer would be 1

I need help!!!!!!!!!?

Answers

Is it radius or circumference?

Hi how’s your day ? Would you like to help me ?

Answers

Answer:

Hi

Good

I think its the second but i'm not sure because there are no measurements

Good luck

A small toy car costs $3. A large toy car costs 5 times as much as the small one.
Aaron wants to buy one of each. Which equation can he use to find the cost (a)
of the two cars?

Answers

Answer:

(3 x 1) + (3(5) x 1) = a

Step-by-step explanation:

Mrs. McClure's famous peanut butter cookies call for 1 cup of peanut butter for every 1 2 of a cup of oil. Today, she wants to make a huge batch with 1 cup of oil. How much peanut butter should she use?

Answers

Answer:

Amount of butter need for 1 cup of oil = 2 cup of butter

Step-by-step explanation:

Given:

Amount of butter need for 1/2 cup of oil = 1 cup

Find:

Amount of butter need for 1 cup of oil

Computation:

Amount of butter need for 1/2 cup of oil = 1 cup

1 cup butter = 1/2 cup oil

So,

Amount of butter need for 1 cup of oil = 1 / [1/2]

Amount of butter need for 1 cup of oil = 1 / [0.5]

Amount of butter need for 1 cup of oil = 2 cup of butter

Jack wants to purchase a DVD player who’s price was $162.50 he has $50 only how much more money does Jack need to purchase the DVD player

Answers

$112.50 is how much jack will need
Jack needs $112.50 to purchase the DVD player

$162.50- 50= 123.50

what is the value of x?

Answers

15 ehdhbdbbfbfhfhfbrfhhfhfhfhfhfhfhhfhfhfhfhfhhffjjfh
15 is the answer bdbdjjsjwushs

Help plzzzz I need the correct answers ASAP and that's my last marking period 4 and I'm in grade 12th

It's homework: Comprehension Questions - 3.1 Credit Basics:

Question 10: it's part 1 multiple choice questions and Part II: Analyze: Understanding Amortization

Janet just graduated from college, has a job she’s scheduled to begin in 3 months, and has decided to treat herself to 6 weeks of travel across South America before she buckles down and starts working full-time. To do the trip, she’s thinking of applying for a personal loan of $3500, and the bank she uses for her checking and savings account has offered her an interest rate of 24%. She has a goal of paying off the trip within two years, so she uses a Bankrate.com loan calculator and gets the following amortization schedule:


4) How many months does it take Janet to pay off her loan?


5) What is the total amount of interest Janet will pay at the end of the loan?

Answers

Answer:

try c

Step-by-step explanation:

a centre seat costs 25£ less than an aisle or window seat. A window or aisle seat costs a and a centre seat costs £271.complete the equation that describes this. how much does an aisle or window costs?​

Answers

Answer:

246

Step-by-step explanation:

271-25=246

What is the average rate of change of f(x)=x2+x−6 between x=1 and x=3 ?

A
5

B
–5

C
15

D
10

Answers

Answer:

10

Step-by-step explanation:

Substitute 1 in place of x and the result is -4.

Again substitute 3 in place of x and the result is 6.

Change=6-(-4)=10

= 1 cubic ft
What is the volume of the solid figure? Enter the answer in the box.

Answers

Answer:

800

hope this helps

The diameter of a circle measures 20 yd. What is the circumference of the circle?
Use 3.14 for it, and do not round your answer. Be sure to include the correct unit in your answer.
20 yd
yd

Answers

Answer: 62.8 yd

Step-by-step explanation:

Circumference= diameter*pi

20*3.14= 62.8

the table describes some of the solutions of the inequality 3m>21. Which graph best describes the solutions of 3m>21?

Answers

Answer:

Option 3

Step-by-step explanation:

Given inequality is,

[tex]3m\geq 21[/tex]

To find the solutions of the given inequality solve this inequality first.

[tex]\frac{3m}{3}\geq \frac{21}{3}[/tex]

[tex]m\geq 7[/tex]

This inequality will be represented by an arrow starting from 7 and directing towards infinity.

Since, inequality is having a sign notation of greater than equal to, arrow will start with a dark circle located at 7.

Therefore, Option 3 (from the top) will be the answer.  

anyone knowww thiusss ?




no scammers pleaseeee

Answers

Answer:

about 9cm

Step-by-step explanation:

Muliply the radius by itself: 16x16

Mulitply the answer by 3.14.

Divide 7252 by the answer to get 9

What is the length of leg s of the triangle below?

Answers

Answer:

E. 8

Step-by-step explanation:

It's a special right angle triangle. Hypotenuse is

[tex] \sqrt{2} x[/tex]

where x is the length of other legs. Also other two sides of triangle are always equal.

So to find the other leg divide by .

[tex] \sqrt{2} [/tex]

The length will be 8.

PLEASE HELP ASAP I have no idea how to solve this pls pls pls

Answers

Answer:

Step-by-step explanation:

you have to use trigonometric functions

cos 30 = adj. /hyp.

cos 30 = 12 / y

y = 12/cos 30 ≅13.86

tan 30 = opp./adj

tan30 = x / 12

x = 12 tan30 ≅6.93

Janette measures the heights in inches of some of the flowers in her garden to see which ones are growing more. The heights are listed below. Which line plot represents the data correctly? 7 1 2 712 7 7 7 1 2 712 6 3 4 634 7 1 4 714 7 1 4 714 7 1 4 714 7 7 6 1 2 612 7 3 4 734 7 3 4 734 6 3 4 634 8 1 4 814 7 7 7 1 2 712 7 7 7 1 4 714 7 7 7 1 2 712 7 1 2 712

Answers

Answer:

Dot plot A

Step-by-step explanation:

In other obtain the solution to the question given, we obtain the frequency distribution of the data values given and compare to the box plots given to identify which boxplot correctly conveys the data.

___ Frequency

6 1/2 - 1

6 3/4 - 2

7 = 5

7 1/4 = 4

7 1/2 = 5

7 3/4 = 2

8 1/4 = 1

What is the answer to this?-

Answers

Answer:

Yes it is congruent by HL

Choose a number sentence is that illustrates distribute property of multiplication over addition 2×7+8 = 2+7×2+8

Answers

Answer:

[tex](b)\ 2 * (7 + 8) = (2 * 7) + (2 * 8)[/tex]

Step-by-step explanation:

Given

[tex](a)\ 2 * (7 + 8) = (2 + 7) * (2 + 8)[/tex]

[tex](b)\ 2 * (7 + 8) = (2 * 7) + (2 * 8)[/tex]

[tex](c)\ 2 * (7 + 8) = (2 * 7) + 8[/tex]

Required

Which illustrates distributive property of multiplication over addition

The property states that:

[tex]a(b + c) = a * b + a * c[/tex]

By comparison

[tex]a = 2\ b = 7\ c = 8[/tex]

So, we have"

[tex]2(7 + 8) = 2 * 7 + 2 * 8[/tex]

[tex]2(7 + 8) = (2 * 7) + (2 * 8)[/tex]

What are the measures of ∠1 and ∠2?

Answers

Answer:

Angle 1 = 102

Angle 2 = 40.9

Step-by-step explanation:

[tex]1)\ 180 - 121.8 = 58.2[/tex]

[tex]2)\ angle\ 2 = 58.2 - 17.3 = 40.9[/tex]

[tex]3)\ angle\ 1 = 180 - 40.9 - 37.1 = 102[/tex]

Answer:

m∠1  = 67.4°      m∠2 = 104.5°

Step-by-step explanation:

17.3 + m∠2 = 121.8

m∠2 = 104.5°

m∠1 + 37.1 = m∠2 = 104.5

m∠1  = 67.4°

Find the area of the figure.

Answers

Answer:

132

Explanation:

All you need to do is separately find the area of the shapes that are part of the figure (in this case the trapezoid and rectangle), and then add them all up.

1.(7x4) + (1/2x8[7+19])

2. 28 + 104

3. 132

~Hope this helps you~

Which expression shows the result of applying the distributive property to 9(2 + 5m)?
• 2 + 45m
O 18 + 45m
O 11 + 14m
18 + 5m

Answers

Answer:

18+45m

Step-by-step explanation:

You multiply when applying the distributative property:

9(2+5m)

18+45m multiply 9 by each value in parentheses

What is the volume of hemisphere with a radius of 8 ft rounded to the nearest tenth of cubic foot

Answers

Answer:

1072.3[tex]ft^{3}[/tex]

Step-by-step explanation:

A hemisphere is half of a sphere, so the volume V of the hemisphere is the volume of the sphere divided by 2.

V = (2/3)*[tex]\pi[/tex][tex]r^{3}[/tex]

   = (2/3)*[tex]\pi[/tex][tex](8ft)^{3}[/tex]

   = (2/3)*[tex]\pi[/tex]*512[tex]ft^{3}[/tex]

   = 1072.3[tex]ft^{3}[/tex]

Question 2
0.5 pts
Write 0.1133 as a fraction.
(Does not need to be simplified)
[a]
Question 3
0.5 pts
what

Answers

Answer:

1133/10000

Step-by-step explanation:

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