Question
1) A manufacturer has received complaints that aging production equipment is forcing workers to work overtime in order to meet production quotas. Historically, the average hours worked per week is 40 with a standard deviation of 6.6 hours. If a sample of 33 workers found that the average work week is 44 hours, conduct a hypothesis test to determine if there is significant evidence that the length of the average work week has increased? Use alpha=.05
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Null Hypothesis, Ho: there is no significant difference between lengths of the average work week. That is u=40
Alternative Hypothesis, h1: length of the average work week has increased. That is u>40
Test statistic:
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