Answered: b) A sample of scores on an examination…

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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Question

(b) A sample of scores on an examination given in Statistics are: Men 72 69 98 66 85 76 79 80 77 Women 81 67 90 78 81 80 76 88 94 Assuming the scores follow the normal distribution and the standard deviations of the two populations are equal. At the 0.01 significance level, is the mean grade of the women higher than the mean grade of men?

Features Features Normal distribution is characterized by two parameters, mean (µ) and standard deviation (σ). When graphed, the mean represents the center of the bell curve and the graph is perfectly symmetric about the center. The mean, median, and mode are all equal for a normal distribution. The standard deviation measures the data's spread from the center. The higher the standard deviation, the more the data is spread out and the flatter the bell curve looks. Variance is another commonly used measure of the spread of the distribution and is equal to the square of the standard deviation.

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