Let x be a normally distributed random variable with the following parameter:μ =125σ =30 9What fraction of the distribution is between 71and 179a0.9281 b0.9011 c0.8749 d0.8494

Answered: Let x be a normally distributed random…

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.1: Measures Of Center

Problem 9PPS

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Let x be a normally distributed random variable with the following parameter:

μ =	125
σ =	30

9	What fraction of the distribution is between	71	and	179
a	0.9281
b	0.9011
c	0.8749
d	0.8494

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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