a) The mean wage per hour for all 400 employees working at a large company is RM 10.50 with a standard deviation of RM 2.20. Let \(\bar{X}\) be the mean wage per hour for a random sample of certain employees selected from this company. Find the mean and standard deviation of \(\bar{X}\) for a sample size of: i. 120 ii. 350

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
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Chapter1: Starting With Matlab
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a) The mean wage per hour for all 400 employees working at a large company is RM 10.50
with a standard deviation of RM 2.20. Let \(\bar{X}\) be the mean wage per hour for a
random sample of certain employees selected from this company. Find the mean and
standard deviation of \(\bar{X}\) for a sample size of:
i. 120
ii. 350
Transcribed Image Text:a) The mean wage per hour for all 400 employees working at a large company is RM 10.50 with a standard deviation of RM 2.20. Let \(\bar{X}\) be the mean wage per hour for a random sample of certain employees selected from this company. Find the mean and standard deviation of \(\bar{X}\) for a sample size of: i. 120 ii. 350
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