1. Access gosset, a data set used by W. S. Gosset circa 1908. The file contains one variable, ADDHRS, which represents the additional hours of sleep gained by 10 patients after exposure to laevohysocyamine hydrobromide. Using the one-sample t test, determine whether the experimental treatment improved the amount of sleep time—that is, whether the mean ADDHRS score is significantly greater than zero.

Use an a of .01.