Assume that adults have IQ scores that are normally distributed with a mean ofμ=105and a standard deviationσ=20.Find the probability that a randomly selected adult has an IQ less than129. Click to view page 1 of the table.LOADING...Click to view page 2 of the table.LOADING... Question content area bottomPart 1The probability that a randomly selected adult has an IQ less than129is enter your response here.(Type an integer or decimal rounded to four decimal places as needed.)

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Answered: Assume that adults have IQ scores that…

Assume that adults have IQ scores that are normally distributed with a mean of μ=105 and a standard deviation σ=20. Find the probability that a randomly selected adult has an IQ less than 129.

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

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.4: Distributions Of Data

Problem 19PFA

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Question

Assume that adults have IQ scores that are normally distributed with a mean of

μ=105

and a standard deviation

σ=20.

Find the probability that a randomly selected adult has an IQ less than

129.

Click to view page 1 of the table.

Click to view page 2 of the table.

Question content area bottom

Part 1

The probability that a randomly selected adult has an IQ less than

129

enter your response here.

(Type an integer or decimal rounded 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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