What is the probability that a taxpayer finished

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According to the Internal Revenue Service, the average length of time for an individual to complete (keep records for, learn, prepare, copy, assemble, and send) IRS Form 1040 is 10.53 hours (without any attached schedules). The distribution is unknown. Let us assume that the standard deviation is two hours. Suppose we randomly sample 36 taxpayers.

What is the probability that a taxpayer finished his or her Form 1040 in more than 12 hours? Use 4 decimal places.

Reference no: EM132495119

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