SOLUTION: The mayor is interested in finding a 98% confidence interval for the mean number of pounds of trash per person per week that is generated in the city. The study included 162 reside
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Question 1187072: The mayor is interested in finding a 98% confidence interval for the mean number of pounds of trash per person per week that is generated in the city. The study included 162 residents whose mean number of pounds of trash generated per person per week was 34.7 pounds and the standard deviation was 6.9 pounds. Round answers to 3 decimal places where possible.
b. With 98% confidence the population mean number of pounds per person per week is between ____ and ____ pounds.
c. If many groups of 162 randomly selected members are studied, then a different confidence interval would be produced from each group. About ____
percent of these confidence intervals will contain the true population mean number of pounds of trash generated per person per week and about _____
percent will not contain the true population mean number of pounds of trash generated per person per week.
Answer by Boreal(15235) (Show Source): You can put this solution on YOUR website!
half-interval is t(0.99, df=161)*s/sqrt(162)
=2.36*6.9/sqrt(162)
=1.279 lb
the interval is (33.421, 35.979) lb.
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98%
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2%
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