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March 6, 2015

March 6, 2015

Posted by **Lina** on Thursday, July 23, 2009 at 12:46pm.

(8.10) Employees in a large manufacturing plant worked and average of 62.0 hours of overtime last year, with a standard deviation of 15.0 hours. For a simple random sample of n=36 employees and x=the number of overtime hours worked last year, determine the z-score corresponding to each of the following sample means:

a. ȭ= 55.0 hours b. ȭ=60.0 hours

c. ȭ=65.0 hours d. ȭ= 47.0 hours

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