Suppose that the duration of a particular type of criminal trial is known to have a mean of 18 days and a standard deviation of 6 days. We randomly sample 9 trials.Give the distribution of ΣX. Find the probability that the total length of the 9 trials is more than 188 days. (Round your answer to four decimal places.).70 percent of the total of 9 of these types of trials will last more than how long?

A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
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Suppose that the duration of a particular type of criminal trial is known to have a mean of 18 days and a standard deviation of 6 days. We randomly sample 9 trials.Give the distribution of ΣX. Find the probability that the total length of the 9 trials is more than 188 days. (Round your answer to four decimal places.).70 percent of the total of 9 of these types of trials will last more than how long?

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