A researcher wishes to estimate the average height of buildings in Muscat. He wants to be 99% confident that the estimate is accurate within 2.5 meter. From a previous study., it is observed that the standard deviation of the height of buildings measured was 6.2 meter. What should be his sample size to do the estimate? [Given zg = 2.58] O 41 None of these 42

A First Course in Probability (10th Edition)
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ISBN:9780134753119
Author:Sheldon Ross
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Chapter1: Combinatorial Analysis
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Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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A researcher wishes to estimate the average height of buildings in Muscat. He wants to be 99% confident that the estimate is accurate
within 2.5 meter. From a previous study, it is observed that the standard deviation of the height of buildings measured was 6.2 meter.
What should be his sample size to do the estimate? [Given zą = 2.58]
O 41
None of these
42
40
Transcribed Image Text:A researcher wishes to estimate the average height of buildings in Muscat. He wants to be 99% confident that the estimate is accurate within 2.5 meter. From a previous study, it is observed that the standard deviation of the height of buildings measured was 6.2 meter. What should be his sample size to do the estimate? [Given zą = 2.58] O 41 None of these 42 40
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