Part (b) Give the distribution of EX. EX - Part (c) Find the probability that the total length of the 9 trials is at least 165 days. (Round your answer to four decimal places.) Part (d) Ninety percent of the total of 9 of these types of trials will last at least how long? (Round your answer to two decimal places.) days
Part (b) Give the distribution of EX. EX - Part (c) Find the probability that the total length of the 9 trials is at least 165 days. (Round your answer to four decimal places.) Part (d) Ninety percent of the total of 9 of these types of trials will last at least how long? (Round your answer to two decimal places.) days
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Need help solving, please don't do Part A I have already solved it. I need help with the other parts. Make sure you label each part, please.
Transcribed Image Text: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)
In words, define the random variable EX.
the total number of each type of trial
the total number of all trials
the total number of days for the nine trials
the total number of hours for the nine trials
Correct! * - *X represents the total time, in days, of all 9 trials.
Part (b)
Give the distribution of EX.
ΣΧ-
Part (c)
Find the probability that the total length of the 9 trials is at least 165 days. (Round your answer to four decimal places.)
O Part (d)
Ninety percent 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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