7.45 Let x be a continuous random variable that has a normal distribution with u = 48 and o = 8. As-suming n/N <.05, find the probability that the sample mean, x, for a random sample of 16 taken fromthis population will bea. between 49.6 and 52.2b. more than 45.7

Note: This probability value calculated from standard normal distribution table.

Answered: 7.45 Let x be a cont suming n/N < .05,…

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7.45 Let x be a cont suming n/N < .05, this population will a. between 49.

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Question

7.45 Let x be a continuous random variable that has a normal distribution with u = 48 and o = 8. As-
suming n/N <.05, find the probability that the sample mean, x, for a random sample of 16 taken from
this population will be
a. between 49.6 and 52.2
b. more than 45.7

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How did it resulted to 0.8749 at letter b? As I review the z-score table, z = -1.15 is equivalent to 0.12507

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