Given two normally distributed populations with means \((\mu_1, \mu_2) = (88, 83)\) and standard deviations \((\sigma_1, \sigma_2) = (44, 52)\), respectively, what is the probability that samples of size \(n_1 = 78\) and \(n_2 = 79\) will yield a value of \(\bar{x}_1 - \bar{x}_2\) greater than 3 but less than 14?- ○ e. 0.4819- ○ c. 0.4814- ○ d. 0.9648- ○ a. 0.0643- ○ b. 0.1422

Answered: Given two normally distributed…

MATLAB: An Introduction with Applications

6th Edition

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Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

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Q1. Which of these is not a parameter of the population distribution of X? A. Sample Mean of X. B. Variance of X. C. Std. deviation of X. D. The Expected value of X, E(X). O A. A В. Ь О С. с O D. d
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7.34 Suppose that for a given computer salesperson, the probability distribution of x = the number of systems sold in 1 month is given by the following table: 1 2 3 4 5 6 7 .05 .10 .12 .30 .30 .11 .01 .01 8 p(x) a. Find the mean value of x (the mean number of systems sold). b. Find the variance and standard deviation of x. How would you interpret these values? c. What is the probability that the number of systems sold is within 1 standard deviation of its mean value? d. What is the probability that the number of systems sold is more than 2 standard deviations from the mean? (Hint: See Example 7.13.)
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