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A human resources department of a large investment bank announced that the number of people it...

A human resources department of a large investment bank announced that the number of people it interviews monthly has a mean of 100, with a standard deviation of 16.1. The management of the bank suspects that the standard deviation exceeds 16.1. Suppose that the management wants to take a small sample of months and carry out a hypothesis test to see if its suspicions have support. State the null and alternative hypothesis that would be use for this test.

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