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 a sample mean would exceed 20 hours per week?
A) 1.0
B) 0.5
C) 1.96
D) Cannot be calculated based on the given information.
E) None of the choices are correct

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The Answer of 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 a sample mean would exceed 20 hours per week?
A) 1.0
B) 0.5
C) 1.96
D) Cannot be calculated based on the given information.
E) None of the choices are correct

An Accounting Firm Is Planning for the Next Tax Preparation