Use the Following Information for Questions:
Twenty Students Were $\overline{x_1}$

Multiple Choice

Use the following information for questions:
Twenty students were randomly assigned to one of four exercise programs (5 students in each program) , and the mean weight losses for the four programs were compared using one-way analysis of variance. The mean square error (MS Error) was 40. The mean weight loss for the first program was $\overline{x_1}$ = 5 pounds.
-What are the degrees of freedom for the t^* multiplier for a confidence interval for $µ_1$ the population mean weight loss for the first program

A) 3
B) 15
C) 16
D) 20