2. Suppose a survey of a random sample of 150 smokers, conducted by the Department of Health, suggests that the mean number of cigarettes a person smokes in a day in Smokerland Y is 4 and the standard deviation Sy is 1. The Department of Health is concerned about the results of the survey and wants to test whether the mean number of cigarettes a person smokes in a day is 3.70 or not. Suppose the Department of Health uses a 5% significance level, Suppose the Department of Health decides not to reject the null hypothesis if [ (Ho) if 3.5 < y < 3.9 ]. What is the size of the test? If μy is 4.1, what is the Power of the test (15 points) (15 points)
2. Suppose a survey of a random sample of 150 smokers, conducted by the Department of Health, suggests that the mean number of cigarettes a person smokes in a day in Smokerland Y is 4 and the standard deviation Sy is 1. The Department of Health is concerned about the results of the survey and wants to test whether the mean number of cigarettes a person smokes in a day is 3.70 or not. Suppose the Department of Health uses a 5% significance level, Suppose the Department of Health decides not to reject the null hypothesis if [ (Ho) if 3.5 < y < 3.9 ]. What is the size of the test? If μy is 4.1, what is the Power of the test (15 points) (15 points)
Chapter1: Making Economics Decisions
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![2. Suppose a survey of a random sample of 150 smokers, conducted by the Department of
Health, suggests that the mean number of cigarettes a person smokes in a day in
Smokerland Y is 4 and the standard deviation Sy is 1. The Department of Health is
concerned about the results of the survey and wants to test whether the mean number of
cigarettes a person smokes in a day is 3.70 or not. Suppose the Department of Health uses
a 5% significance level,
Suppose the Department of Health decides not to reject the null hypothesis if
[ (Ho) if 3.5 < y < 3.9
].
What is the size of the test?
If μy is 4.1, what is the Power of the test
(15 points)
(15 points)](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fb55c1690-4c18-4793-9129-6cd04f8390e3%2Fa94f590d-0b70-43ab-820a-eeab1332c4c7%2F7n5s1s_processed.jpeg&w=3840&q=75)
Transcribed Image Text:2. Suppose a survey of a random sample of 150 smokers, conducted by the Department of
Health, suggests that the mean number of cigarettes a person smokes in a day in
Smokerland Y is 4 and the standard deviation Sy is 1. The Department of Health is
concerned about the results of the survey and wants to test whether the mean number of
cigarettes a person smokes in a day is 3.70 or not. Suppose the Department of Health uses
a 5% significance level,
Suppose the Department of Health decides not to reject the null hypothesis if
[ (Ho) if 3.5 < y < 3.9
].
What is the size of the test?
If μy is 4.1, what is the Power of the test
(15 points)
(15 points)
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