The University of Sydney conducted a survey to find out the average number of hours an academic exercised in a week. They would like to be 99% confident that the estimated mean is no more than 0.91 hours from the true mean. What sample size should they use. Past data has indicated that the standard deviation for academic exercise time is about hours. (C) 2021 Dr Steven Sommer, The University of Sydney. The sample size they should use is

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The University of Sydney conducted a survey to find out the average number of hours an academic exercised in a week. They would like to be 99% confident that the estimated mean is no more than 0.91 hours from the true mean. What sample
size should they use. Past data has indicated that the standard deviation for academic exercise time is about 7 hours.
(C) 2021 Dr Steven Sommer, The University of Sydney.
.....
The sample size they should use is
Transcribed Image Text:The University of Sydney conducted a survey to find out the average number of hours an academic exercised in a week. They would like to be 99% confident that the estimated mean is no more than 0.91 hours from the true mean. What sample size should they use. Past data has indicated that the standard deviation for academic exercise time is about 7 hours. (C) 2021 Dr Steven Sommer, The University of Sydney. ..... The sample size they should use is
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