Answered: normally distributed with a mean given…

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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Assume that women's weights are normally distributed with a mean given by μ=143 lb and a standard deviation given by 29 lb.
(a)  If 1 woman is randomly selected, find the probabity that her weight is between 113 lb and 172 lb

(b)  If 3 women are randomly selected, find the probability that they have a mean weight between 113 lb and 172 lb

(c)  If 73 women are randomly selected, find the probability that they have a mean weight between 113 lb and 172 lb

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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