davidkim618p29ysd davidkim618p29ysd

01-08-2020
Mathematics

contestada

The mean of normally distributed test scores is 82 and the standard deviation is 5. If there are 241 test scores in the data sample, how many of them were in the 92 to 97 range?

Respuesta :

MathPhys MathPhys

01-08-2020

Answer:

5

Step-by-step explanation:

Find the z-scores.

z = (x − μ) / σ

z₁ = (92 − 82) / 5

z₁ = 2

z₁ = (97 − 82) / 5

z₂ = 3

Find the probability:

P(92 < X < 97)

P(2 < Z < 3)

P(Z < 3) − P(Z < 2)

0.9987 − 0.9772

0.0215

Find the number of tests:

0.0215 (241) ≈ 5

Answer Link

Otras preguntas

Based on your reading of Oliver Twist by Charles Dickens, match the character traits to the characters who exhibit them. Character list: Oliver Twist, Charlotte

Which one of the following sets of numbers represents the lengths of the sides of a right triangle? A. 5, 10, 15 B. 6, 9, 10 C. 13, 35, 37 D.9, 40, 41

A linear function has an x-intercept of 12 and a slope of StartFraction 3 Over 8 EndFraction. How does this function compare to the linear function that is repr

A local philanthropist made an unconditional pledge to donate $100,000 to a not-for-profit organization to be paid in five equal installments of $20,000 beginni

14, the quotient of 2 and a number x, times 3?

Help asap!! Will mark brainliest

Who were the main characters in into the woods

Can someone please help me with this ASAP.

a) Work out the value of 5^2 - 1^5x 2^4

why is the U.S. Secretary of State important?