Does the evidence support assertion by production manager


Problem

A production manager claims that an average of 50 boxes per hour are filled with finished goods at a final stage of production line. A random sample of 48 different workers, at different times, working at the end of identical production lines shows an average number of boxes filled as 47.5 with a standard deviation of 0.7 boxes. Does this evidence support the assertion by the production manager at the 1% level of significance?

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Cost Accounting: Does the evidence support assertion by production manager
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