How much time do students at your school spend on the Internet? You collect data from a

random sample of 32 students at your school and the mean amount of time is 32 minutes.

What critical value t* from Table B should be used in constructing a confidence interval for

the population mean in each of the following settings. Assume the conditions are met.

a. A 95% confidence interval based on n = 10 randomly selected observations.

b. A 90% confidence interval based on a random sample of 77 individuals.

Table B:

The Table Numbers In each row of the table are valves on a f-distribution with Well degrees of freedom for selected right-tall igreater than probabilities tol DOISHA 13404 1.301430 11041 1.30171 134100 2:49218 271471 3.700 1.HI4H