Assume that all​ grade-point averages are to be standardized on a scale between 0 and 6. How many​ grade-point averages must be obtained so that the sample mean is within 0.012 of the population​ mean? Assume that a 99​% confidence level is desired. If using the range rule of​ thumb, σcan be estimated as range4=6−04=1.5. Does the sample size seem​ practical?

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
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Chapter10: Statistics
Section: Chapter Questions
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Assume that all​ grade-point averages are to be standardized on a scale between 0 and 6.

How many​ grade-point averages must be obtained so that the sample mean is within 0.012 of the population​ mean? Assume that a 99​% confidence level is desired. If using the range rule of​ thumb, σcan be estimated as range4=6−04=1.5.

Does the sample size seem​ practical?

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