Apple gives all of its new hires an aptitude test. The scores are normally distributed with a standard deviation of 15 and mean of 75. A simple random sample of 36 is taken. a.What are the expected value, the standard deviation, and the shape of the sampling distribution of x? b.What is the probability that the average aptitude test in the sample will be between 70.14 and 82.14? c.Find a value, C, such that P(x≥ C) = .015.
Apple gives all of its new hires an aptitude test. The scores are normally distributed with a standard deviation of 15 and mean of 75. A simple random sample of 36 is taken. a.What are the expected value, the standard deviation, and the shape of the sampling distribution of x? b.What is the probability that the average aptitude test in the sample will be between 70.14 and 82.14? c.Find a value, C, such that P(x≥ C) = .015.
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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Apple gives all of its new hires an aptitude test. The scores are
a.What are the
b.What is the probability that the average aptitude test in the sample will be between 70.14 and 82.14?
c.Find a value, C, such that P(x≥ C) = .015.
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