Answered: Assume that adults have IQ scores that…

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

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.4: Distributions Of Data

Problem 22PFA

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Assume that adults have IQ scores that are normally distributed with mean of mu = 100 and a standard deviation sigma=20, Find the probability that a randomly selected adult has an IQ 80 and 120

the probability that a randomly selected adult has an IQ between 80 and 120 is

(type an integer or decimal rounfed to four decimal places as needed)

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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