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A call centre claims that employees mean mostly salary is $2400. You take sample of 25...

A call centre claims that employees mean mostly salary is $2400. You take sample of 25 employees and find the mean is $2340 and the standard deviation is $40. Is there enough evidence to reject the director’s claim at alpha=0.05? Show all steps.
(Hint t0.05/2 = 2.06).

Math   Statistics-And-Probability   
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