Among various ethnic groups, the standard deviation of heights is known to be approximately three inches. Forty-eight male Swedes are surveyed. The sample mean is 71 inches. A 96% confidence interval for the population mean height of male Swedes is: O (70.238,71.762) O (71.167,72.833 ) O (70.151,71.849) O (70.167,71.833)

A First Course in Probability (10th Edition)
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ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
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Among various ethnic groups, the standard deviation of heights is known to be
approximately three inches. Forty-eight male Swedes are surveyed. The sample mean is
71 inches. A 96% confidence interval for the population mean height of male Swedes is:
O (70.238,71.762)
(71.167,72.833 )
O (70.151,71.849)
(70.167,71.833 )
Transcribed Image Text:Among various ethnic groups, the standard deviation of heights is known to be approximately three inches. Forty-eight male Swedes are surveyed. The sample mean is 71 inches. A 96% confidence interval for the population mean height of male Swedes is: O (70.238,71.762) (71.167,72.833 ) O (70.151,71.849) (70.167,71.833 )
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