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Suppose that the duration of a particular type of criminal trial is known to be...

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Suppose that the duration of a particular type of criminal trial is known to be normally distributed with a mean of 15 days and a standard deviation of 6 days Let X be the number of days for a randomly selected trial Round all answers to 4 decimal places where possible a What is the distribution of X X N b If one of the trials is randomly chosen find the probability that it lasted at least 11 days c If one of the trials is randomly chosen find the probability that it lasted between 17 and 20 days d 84 of all of these types of trials are completed within how many days Please enter a whole number

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