2. A random sample of 60 female members of health clubs in Dallas showed that they spend, on average, 4 hours per week doing physical exercise and a have a standard deviation of .75 hours. Find a 99% confidence interval for the population mean. Round to the nearest hundredth on all calculations.

x-bar =___________________

s =_________________

n =_______________

critical value =________________

E =________________

confidence interval, least to greatest: ______________to_______________