A large airline company called Skyology Inc. monitors customer satisfaction by asking customers to rate their experience as a 1, 2, 3, 4, or 5, where a rating of1 means "very poor" and 5 means "very good". The customers' ratings have a population mean of u = 4.43, with a population standard deviation of σ = 1.71.Suppose that we will take a random sample of n = 7 customers' ratings. Let X represent the sample mean of the 7 customers' ratings. Consider the samplingdistribution of the sample mean X,Complete the following. Do not round any intermediate computations. Write your answers with two decimal places, rounding if needed.(a) FindH(the mean of the sampling distribution of the sample mean).XH = 0×SB(b) Find σ- (the standard deviation of the sampling distribution of the sample mean).*=0XS

(a) μxˉ=4.43(b) σxˉ=0.64Explanation:It is given that the customer rating's have a population mean…

Answered: A large airline company called Skyology…

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 74 and 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. The lowest score that would qualify a student for an A is nothing. (Round up to the nearest integer as needed.) The lowest score that would qualify a student for a B is nothing. (Round up to the nearest integer as needed.) The lowest score that would qualify a student for a C is nothing. (Round up to the nearest integer as needed.) The lowest score that would qualify a student for a D is nothing. (Round up to the nearest integer as needed.)
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The salaries of professional baseball players are heavily skewed right with a mean of $3.2 million and a standard deviation of $2 million. The salaries of professional football players are also heavily skewed right with a mean of $1.9 million and a standard deviation of $1.5 million. A random sample of 40 baseball players' salaries and 35 football players' salaries is selected. The mean salary is determined for both samples. Let -T, represent the difference in the mean salaries for baseball and football players. Which of the following represents the standard deviation of the sampling distribution for - -- ? O 0.41 million O 0,57 million Save and Exit Next Submit Mark this and return hp & 4 6. 7 8. 9. y h k

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