Question 16 Suppose that the duration of a particular type of criminal trial is known to be normally distributed with a mean of 21 days and a standard deviation of seven days. (a) In words, define the random variable X. Edit - Insert - Formats - B IUX, <> (b) Find the z-score for a trial lasting 19 days. (Round your answer to three decimal places.) (c) If one of the trials is randomly chosen, find the probability that it lasted at least 19 days. (d) Shade the area corresponding to this probability in the graph below. (Hint: The x-axis is the z- score. Use your z-score from part (b), rounded to one decimal place). Shade: Left of a value Click and drag the arrows to adjust the values. (e) ninety-three percent of all trials of this type are completed within how many days? Question Help: D Post to forum E Calculator Submit Question

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