Question: Please help with d and e. The U.S. Census Bureau conducts a study to determine the time needed to complete the short form. The Bureau

Please help with d and e.

The U.S. Census Bureau conducts a study to determine the time needed to complete the short form. The Bureau surveys 200 people. The sample mean is 8.2 minutes. There is a known standard deviation of 2.2 minutes. The population distribution is assumed to be normal. a. T = 8.2 b. O= 2.2 C. n. = 200 Construct a 90% confidence interval for the population mean time to complete the forms: ) d. e. What is the error bound

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