(Answered) The mean preparation fee hampr block charged reil customers

Statistics

The mean preparation fee H&R Block charged reil customers last year was $183, the wall street journal, march 7, 2012. use this price as the population mean and assume the population standard deviation of preparation fees is $50.

a. What is the probability that the mean price for a sample of 30 H&R Block retail customers is within $8.00 of population means.

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