Question: A new manager of a small convenience store randomly sample 30 purchases from yesterday sale. If the mean was $45.53 and the standard deviation was

A new manager of a small convenience store randomly sample 30 purchases from yesterday sale. If the mean was $45.53 and the standard deviation was $23.67, is there evidence that the overall mean purchase amount is at least $42? Assume the sales population approximately follows a normal distribution. Use a a significant level of &=.1

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