(e) sixty-one percent of all trials of this type are completed within how many days?Oucction HelEO Roct to for Suppose that the duration of a particular type of criminal trial is known to be normally distributed with amean of 21 days and a standard deviation of seven days.(a) In words, define the random variable X.Edit Insert -Formats -BAく)(b) Find the ZSCore for a trial lasting 20 days.(Round your answer to threedecimal places.)(c) If one of the trials is randomly chosen, find the probability that it lasted at least 20 days.(d) Shade the area corresponding to this probability in the graph below. (Hint: The x-axis is the z-score. Useyour z-score from part (b), rounded to one decimal place).

Given that the duration of a particular type of criminal trial is known to be normally distributed…

Answered: Suppose that the duration of a…

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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Suppose X ~ N(8, 9). What value of x is 0.67 standard deviations to the left of the mean?
Chebyshev's Theorem states that for any set of numbers, the fraction that will like within k Standard deviations of the mean is at least 1- 1/k2. Use this theorem to find the fraxtion of all the numbers of a data that must lie within 3 standard deviations from the mean.
Times for a medical procedure are normally distributed. There are 2 methods. Method A has a mean of 25 minutes and a standard deviation of 8 minutes, while Method B has a mean of 29 and a standard deviation of of 4 minutes. Which method is preferred if the procedure must be completed within 27 minutes? Which procedure is preferred if the procedure must be completed within 35 minutes?
The national average SAT schore was found to be a 2140 with a standard deviation of 892. If the test is normally distributed, find each The integer 87th percentile score What is the probability that a students will score between a 2100 and a 2740
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Assume that adults have IQ scores that are normally distributed with a mean of mμ=100 and a standard deviation σ= 15. Find the probability that a randomly selected adult has an IQ less than 127. The probability that a randomly selected adult has an IQ less tha 127 is
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a standardize exam scores are normally distributed,in a recent year,the mean test scores was 1490,standard deviation was 320,the test sscores four for studentselected at a random are;1940,1249,and 1380.Find the Zscores that correspond to each vale and determine whether any of the values are unusual
Times for a procedure are normally distributed. There are 2 methods. Method A has a mean of 25 minutes and a standard deviation of 8 minutes. Method B has a mean of 29 minutes and a standard deviation of 4 minutes. Which procedure is preferred if it must be completed within 33 minutes?
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A standardized exam’s score are normally distributed. In a recent year, the mean test score was 1477 and the standard was 315. The test scores of four students selected at random 1860 1230, 2160, and 1360. Find the Z- score that correspond to each value and determine wether any of the values are unusual. The Z-score for 1860 is-The Z-score for 1230 is-The Z-score for 2160 is-The Z-score for 1360is-

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