A Police Dispatcher Claims She Handles At Least 100 Calls Per Day Her Supervisor

A police dispatcher claims she handles at least 100 calls per day. Her supervisor believes she is exaggerating and decides to test the claim. The supervisor takes  a sample of 41 days and the sample reveals aa sample mean of 95 calls and a sample standard deviation of 9 calls. Using 5% level of significance, what can we conclude about the dispatchers claim?

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