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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 92% confidence interval for the population mean height of male Swedes is D (70.167,71.833 ) (71.167,72.833) (70.151,71.849)

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 92% confidence interval for the population mean height of male Swedes is D (70.167,71.833 ) (71.167,72.833) (70.151,71.849)

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 7PPS
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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 92% confidence interval for the population mean height of male Swedes is (70.167,71.833 ) O (71.167,72.833 ) ( 70.151,71.849) ( 70.238,71.762) Question The percentage rates of home ownership for 8 randomly selected states are: 66, 75.8, 70.9, 73.9, 63.4, 68.5, 73.3, 65.9. The 98% confidence interval of the population variance for the percentage rate of home ownership is: (3.138, 7.995) (6.83, 140.052) (7.47, 8.754) O (7.497, 111.79) Question * Previous studies showed that the lifetime of solar panels is normally distributed with a mean of 27 years and a standard deviation of 3 years. A sample of 10 panels is selected, determine the probability that the mean life of the selected panels is between 26 and 30 years. 0.8523
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 92% confidence interval for the population mean height of male Swedes is (70.167,71.833 ) O (71.167,72.833 ) ( 70.151,71.849) ( 70.238,71.762) Question The percentage rates of home ownership for 8 randomly selected states are: 66, 75.8, 70.9, 73.9, 63.4, 68.5, 73.3, 65.9. The 98% confidence interval of the population variance for the percentage rate of home ownership is: (3.138, 7.995) (6.83, 140.052) (7.47, 8.754) O (7.497, 111.79) Question * Previous studies showed that the lifetime of solar panels is normally distributed with a mean of 27 years and a standard deviation of 3 years. A sample of 10 panels is selected, determine the probability that the mean life of the selected panels is between 26 and 30 years. 0.8523
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