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Suppose that the duration of a particular type of criminal trial is known to have a mean of 15 days and a standard deviation of

Suppose that the duration of a particular type of criminal trial is known to have a mean of 15 days and a standard deviation of 5 days. We randomly sample 9 trials.

  • Part (a)

Eightypercent of the total of 9 of these types of trials will last at least how long? (Round your answer to two decimal places.) days

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