Question

6. [16 points] An Internet provider contacts a random sample of 300 customers and asks how many hours per week the customers use the Internet. It found the average amount of time spent on the Internet per week of the sample participants to be 7.2 hours. The standard error is 0.458. (a) Find the margin of error, using the given standard error, for a 99% confidence interval for the average amount of time all customers use the Internet. (b) Use the result of part (a) to find the 99% confidence interval for the parameter. Round to two decimal places and show work.

          6. [16 points] An Internet provider contacts a random sample of 300 customers and asks how many hours per week the customers use the Internet. It found the average amount of time spent on the Internet per week of the sample participants to be 7.2 hours. The standard error is 0.458.
(a) Find the margin of error, using the given standard error, for a 99% confidence interval for the average amount of time all customers use the Internet.
(b) Use the result of part (a) to find the 99% confidence interval for the parameter. Round to two decimal places and show work.

6. [16 points] An Internet provider contacts a random sample of 300 customers and asks how many hours per week the customers use the Internet. It found the average amount of time spent on the Internet per week of the sample participants to be 7.2 hours. The standard error is 0.458.
(a) Find the margin of error, using the given standard error, for a 99% confidence interval for the average amount of time all customers use the Internet.
(b) Use the result of part (a) to find the 99% confidence interval for the parameter. Round to two decimal places and show work.

Added by James S.

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