The following data represent the length of time, in days, to recovery for patients randomly treated with one at two medications to clear up severe bladder infections. Find a 90% condence interval for the ditterence p2 - u, between in the mean recovery times for the two medications. assuming normal populations with equal variances. Medication 1 n1= 11 x1 =14 s? _ 1.8 Medication 2 n2: 12 2 = 19 s: -13 Click here to view [age 1 of the table of critical values of the tdistribution. Click here to view p_age 2 of the table of critical values of the t-distribution. The condence interval is D