A legislative aide is doing research on the duration of calls initiated on car cellular phones. A preliminary study showed that the standard deviation of these calls is 1.6 minutes. How large a sample will be needed for the aide to be able to state with 99% confidence that the sample mean duration time for the calls differs from the population mean by no more than 0.20 minutes?
A legislative aide is doing research on the duration of calls initiated on car cellular phones. A preliminary study showed that the standard deviation of these calls is 1.6 minutes. How large a sample will be needed for the aide to be able to state with 99% confidence that the sample mean duration time for the calls differs from the population mean by no more than 0.20 minutes?
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 3GP
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A legislative aide is doing research on the duration of calls initiated on car cellular phones. A preliminary study showed that the standard deviation of these calls is 1.6 minutes. How large a sample will be needed for the aide to be able to state with 99% confidence that the sample mean duration time for the calls differs from the population mean by no more than 0.20 minutes?
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