Yoonie is a personnel manager in a large corporation. Each month she must review 10 of the employees. Frompast experience, she has found that the reviews take her approximately 4 hours each to do with a populationstandard deviation of 1.1 hours. Let X be the random variable representing the time it takes her to completeone review. Assume X is normally distributed. Let X be the random variable representing the mean time tocomplete the 10 reviews. Assume that the 10 reviews represent a random set of reviews.(a) What is the mean, standard deviation, and sample size?Mean =NumberStandard Deviation =NumberSample Size =Number(b) Complete the distributions. Round all decimals to four decimal places.X~Click for List( NumberNumberX -( Number)Click for ListNumber

a) Define a random variable X, that is the time to review.

Answered: Yoonie is a personnel manager in 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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In a large section of a statistics class, the points for the final exam are normally distributed, with a mean of 71and a standard deviation of 8. Grades are assigned such that the top 10% receive A's, the next 20% received B's, the middle 40% receive C's, the next 20% receive D's, and the bottom 10% receive F's. Find the lowest score on the final exam that would qualify a student for an A, a B, a C, and a D.
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