public school get an average of 5.7 hours of sleep each night with a standard deviation of 1.7 hours. What is the probability that a random selected group of 35 students get more than 6 hours of sleep each night?

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
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Chapter1: Starting With Matlab
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Suppose the students who finished JHS in public school get an average of 5.7 hours of sleep each night with a standard deviation of 1.7 hours. What is the probability that a random selected group of 35 students get more than 6 hours of sleep each night?

 

A. What is the value of the z-score?

B. What is the standard error?

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