Dr. Smith designed a weight loss program. To check if the program is effective. Dr. Smith invites 100 randome selected peopie to participate in the study. The doctor measured the weight of participants before they started the program and after 3 months of following the program. The program is considered to be effective if there is a clear decrease in the weight of the participants. Dr. Smith runs the appropriate test (using on = 0.05) and gets the following Excel output: t-Test: Before After Mean 189.709 170.121 Variance 2503.95 2429.820 Observations 100 100 Pearson Correlation Hypothesized Mean Difference df 13 Stat 2.753 P(T