In Order to Estimate the Average Time Spent Per Student

question 56

Multiple Choice

In order to estimate the average time spent per student on the computer terminals at a local university, data were collected for a sample of 64 business students over a one-week period. Assume the population standard deviation is 1.6 hours. If the sample mean is 9 hours, then the 95% confidence interval is _____ hours.

• A) 7.04 to 10.96
• B) 7.36 to 10.64
• C) 7.80 to 10.20
• D) 8.608 to 9.392