It is recommended that pregnant women over eighteen years old get 85 milligrams of vitamin C each day. The standard deviation of the population is estimated to be 11 milligrams per day. A doctor is concerned that her pregnant patients are not getting enough vitamin C. So she collects on 49 patients and finds that the mean vitamin intake of these 49 patients is 80 milligrams per day. Based on significance level of .01 test the hypothesis