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phil820
phil820
15.04.2020 • 
Mathematics

Suppose that the duration of a particular type of criminal trial is normally distributed with a mean of 25 days and standard deviation of 5 days. Draw a picture of the situation and indicate what key was used on your calculator for parts a-c.

a. If 1 trial is randomly selected, find the probability that the trial lasts longer than 30 days. Is it unusual for a trial to be longer than 36 days (use statistical reasoning to explain your answer)?
b. Sixty-five percent of all this type of trials completed within how many days?
c. What are the cut off number off days for the middle 90% of trial times

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