9. The Wechler Adult Intelligence Scale (WAIS) is a common "IQ test" for adults. The distribution of WAIS scores for persons over 16 years of age is approximately Normal with mean 100 and standard deviation 15. Use this information to answer the following questions. (a) What score places a randomly selected individual in the 95th percentile? (b) Describe the sampling distribution of the average WAIS score for an SRS of 60 people? (c) What is the probability that the average WAIS score of a SRS of 60 people is at least 105?
9. The Wechler Adult Intelligence Scale (WAIS) is a common "IQ test" for adults. The distribution of WAIS scores for persons over 16 years of age is approximately Normal with mean 100 and standard deviation 15. Use this information to answer the following questions. (a) What score places a randomly selected individual in the 95th percentile? (b) Describe the sampling distribution of the average WAIS score for an SRS of 60 people? (c) What is the probability that the average WAIS score of a SRS of 60 people is at least 105?
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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