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)
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Question
please slove first and second
![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](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F90e61eef-e954-4728-be92-1b577dbb0c19%2F1dff6850-4bdf-44ae-b723-cb20e5ac69f8%2Fbql2jqw_processed.jpeg&w=3840&q=75)
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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