A survey of 20 randomly selected adult men showed that the mean time they spend per week watching sports on television is 8.78 hours with a standard deviation of 1.99 hours. Assuming that the time...

A survey of 20 randomly selected adult men showed that the mean time they spend per week watching sports on television is 8.78 hours with a standard deviation of 1.99 hours.

Assuming that the time spent per week watching sports on television by all adult men is (approximately) normally distributed, construct a 90% confidence interval for the population mean,  μ.


Round your answers to two decimal places.

Lower bound: Enter your answer; confidence interval, lower bound

Upper bound: Enter your answer; confidence interval, upper bound