Answered: A normal population had a mean of 70…

A normal population had a mean of 70 and a standard deviation of 12. You select a random sample of 9. What is the probability that the sample mean is greater than 73?

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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Q: normal population had a mean of 70 and a standard deviation of 12. You select a random sample of 9.…

A: given data normal distributionμ = 70σ = 12n = 9 P(x¯<66) = ?

Question

A normal population had a mean of 70 and a standard deviation of 12. You select a random sample of 9. What is the probability that the sample mean is greater than 73?

Expert Solution

Step 1

$μ = 70 σ = 12 n = 9 P (\bar{x} > 73) = ?$

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