Planning for the next tax preparation season

Reference no: EM131107588

An accounting firm is planning for the next tax preparation season. From last year's returns, the firm collects a systematic random sample of 100 filings. The 100 filings showed an average preparation time of 90 minutes with a standard deviation of 140 minutes.

What is the probability that the mean completion time is between 1 and 2 hours, i.e., 60 and 120 minutes?

A) Approximately 1.

B) 0.1664

C) 0.8336

D) 0.9676

Reference no: EM131107588

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