1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
abruzzese [7]
1 year ago
13

A graduate school entrance exam has scores that are normally distributed with a mean of 560 and a standard deviation of 90. What

percentage of examinees will score between 600 and 700
Mathematics
1 answer:
9966 [12]1 year ago
4 0

26.8% of examinees will score between 600 and 700.

This question is based on z score concept.

A Z-score is a numerical measurement that describes a value's relationship to the mean of a group of values. Z-score is measured in terms of standard deviations from the mean. If a Z-score is 0, it indicates that the data point's score is identical to the mean score.

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

where:

μ is the mean

σ is the standard deviation of the population

Given:

μ = 560

σ = 90

For

600≤ X≤700

for x = 700

Z score =x - μ/σ

=(700 - 560)/90

      = 1.55556

P-value from Z-Table:

P(560<x<700) = P(x<700) - 0.5 = 0.44009

for x = 600

Z score =x - μ/σ

=(600 - 560)/90

      = 0.44444

P-value from Z-Table:

P(560<x<600) = P(x<600) - 0.5 = 0.17164

∴ P(600<x<700) = P(560<x<700) - P(560<x<600)

                           = 0.44009 - 0.17164

                          =0.26845

∴26.8% percentage of examinees will score between 600 and 700.

Learn more about Z score here :

brainly.com/question/15016913

#SPJ4

You might be interested in
Please explain your answer as well. THX!!
Stells [14]

Answer:

option b

6 C 2 + 6

Step-by-step explanation:

Given in the question that,

number of pink beans = 87

number of purple beans = 74

number of white beans = 35

number of black beans = 70

number of orange beans = 25

number of green beans = 47

<h3>Step 1</h3>

if two beans selected are different

6 C 2

(6 colours of beans)

<h3>Step 2</h3>

if two beans selected are same

6 C 1 = 6

(6 colours of beans)

<h3>Step 3 </h3>

total sample space will be

6 C 2 + 6

6 0
3 years ago
Determine the effective annual yield for each investment.
Lyrx [107]
I think it’s B but don’t at me
3 0
3 years ago
Please help will mark brainliest
beks73 [17]

Answer:

m\angle N=57^{\circ}

Step-by-step explanation:

From the isosceles-base theorem, the measure of the angles adjacent to the pair of congruent sides of the triangle are equal. Since the problem declares LM\cong LN, the remaining unknown angles are equal (m\angle N=m\angle M). The sum of the interior angles of a triangle always add up to 180^{\circ}$.

Therefore:

m\angle N\cdot 2+66=180,\\m\angle N\cdot 2=114,\\m\angle N=\fbox{$57^{\circ}$} .

7 0
3 years ago
Read 2 more answers
Identify all of the roots of the function f(x) = x^3 - 5x^2-2x+24
Sveta_85 [38]

Answer: -2,3,&4

Step-by-step explanation:

Correct on edgenuity

3 0
3 years ago
Write 1,340,000,000,000 in expanded form with exponents
Kazeer [188]

1 × 1010+3 × 109+4 × 108+0 × 107+0 × 106+0 × 105+0 × 104+0 × 103+0 × 102+0 × 101+0 × 10<span>0

</span>
3 0
3 years ago
Other questions:
  • A builder makes drainpipes that drop 1 cm over a horizontal distance of 30cm to prevent clogs a certain drainpipe needs to cover
    7·2 answers
  • A sequence is separated by which symbol <br><br>A ,<br>B +<br>C .​
    11·1 answer
  • Courtney Celeste is starting Celeste Consulting Services, a small service business. Celeste Consulting Services uses the account
    8·1 answer
  • Analyze the diagram below and complete the instructions that follow. Find the unknown side lenght x. Write your answer in simple
    13·1 answer
  • noah goes to the store with $40 .he spend 38.60 on 13 bags of popcorn. how much one bag of popcorn cost ?
    8·1 answer
  • What are the factor of these numbers,
    9·1 answer
  • Can someone answers this please
    5·1 answer
  • What is the original list price if the didcount is $35 and the discount price is 10%?
    9·2 answers
  • I need help with the question attached
    13·2 answers
  • A cereal company makes a cereal from two ingredients: wheat and oats. Each ingredient provides two essential nutrients: vitamin
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!