Suppose that a random sample from a population is to be used to estimate the population mean and standard deviation. In order to attain a confidence level of 95% for the true mean to be within 2.145 standard deviations off the sample mean, this estimate should be obtained from a sample of size ________. a. 21 b. 14 c. 30 d. 15 e. 20
Suppose that a random sample from a population is to be used to estimate the population mean and standard deviation. In order to attain a confidence level of 95% for the true mean to be within 2.145 standard deviations off the sample mean, this estimate should be obtained from a sample of size ________. a. 21 b. 14 c. 30 d. 15 e. 20
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 14PPS
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Suppose that a random sample from a population is to be used to estimate the population mean and standard deviation. In order to attain a confidence level of 95% for the true mean to be within 2.145 standard deviations off the sample mean, this estimate should be obtained from a sample of size ________.
a. 21
b. 14
c. 30
d. 15
e. 20
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