At a large publishing company, the mean age of proofreaders is 36.2 years and the standard deviation is 3.7 years. Assume the variable is normally distributed. Round intermediate z -value calculations to two decimal places and the final answers to at least four decimal places. If a random sample of 25 proofreaders is selected, find the probability that the mean age of the proofreaders in the sample will be between 36.5 and 38 years. Assume that the sample is taken from a large population and the correction factor can be ignored.
At a large publishing company, the mean age of proofreaders is 36.2 years and the standard deviation is 3.7 years. Assume the variable is normally distributed. Round intermediate z -value calculations to two decimal places and the final answers to at least four decimal places. If a random sample of 25 proofreaders is selected, find the probability that the mean age of the proofreaders in the sample will be between 36.5 and 38 years. Assume that the sample is taken from a large population and the correction factor can be ignored.
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.5: Comparing Sets Of Data
Problem 4CYU
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Question
At a large publishing company, the mean age of proofreaders is
36.2
years and the standard deviation is
3.7
years. Assume the variable is
z
-value calculations to two decimal places and the final answers to at least four decimal places.
If a random sample of
25
proofreaders is selected, find the probability that the mean age of the proofreaders in the sample will be between
36.5
and
38
years. Assume that the sample is taken from a large population and the correction factor can be ignored.
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