A researcher want to determine an interval estimate for the average weight of adult gorillas in pounds. She wants to be 99% certain that she is within 8.3 of the true average. From past studies, it is known that the standard deviation of the weights of adult gorillas is 15.2 pounds. What is the minimum sample size necessary to estimate the population mean? Round your answer up to the next integer.

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.3: Measures Of Spread
Problem 26PFA
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A researcher want to determine an interval estimate for the average weight of adult gorillas in pounds. She wants to be 99% certain that she is within 8.3 of the true average. From past studies, it is known that the standard deviation of the weights of adult gorillas is 15.2 pounds.

  • What is the minimum sample size necessary to estimate the population mean?

    Round your answer up to the next integer.
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