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Evidence to doubt the distributor reported average

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One of your distributors reports an average of 175 sales per day. You suspect that the average is different from 175, so you select 42 days and determine the number of sales each day. The sample mean is 166 with a standard deviation of 20 sales. At alpha= 0.01, is there enough evidence to doubt the distributor's reported average

Reference no: EM131152991

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