a. Nationally, the population as a whole watches an average of 6.2 hours of TV per day. A random sample of 1,017 senior citizens reports watching an average of 5.9 hours per day with a standard...


a. Nationally, the population as a whole watches an average of 6.2 hours of TV per day. A random sample of 1,017 senior citizens reports watching an average of 5.9 hours per day with a standard deviation of 0.7. Is the difference significant?


b. The same sample of senior citizens reports that they belong to an average of 2.1 voluntary organizations and clubs with a standard deviation of 0.5. Nationally, the average is 1.7. Is the difference significant?



May 05, 2022
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