2. a. The Intelligence Quotient (IQ) of adults is approximately normally distributed with mean 100 and standard deviation 15. i. Find the probability that a random sample of 100 adults will have a mean IQ greater than 104. ii. Find the sample size n, given that the probability that the mean IQ exceeds 101 is 0.031.

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
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ISBN:9780079039897
Author:Carter
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Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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2. a. The Intelligence Quotient (IQ) of adults is approximately normally distributed with
mean 100 and standard deviation 15.
i.
Find the probability that a random sample of 100 adults will have a mean IQ
greater than 104.
ii.
Find the sample size n, given that the probability that the mean IQ exceeds 101 is
0.031.
Transcribed Image Text:2. a. The Intelligence Quotient (IQ) of adults is approximately normally distributed with mean 100 and standard deviation 15. i. Find the probability that a random sample of 100 adults will have a mean IQ greater than 104. ii. Find the sample size n, given that the probability that the mean IQ exceeds 101 is 0.031.
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