Question

Dr. Sherri Brock’s diet pills are supposed to cause significant weight loss. The following table shows the results of a recent study where some individuals took the diet pills and some did not.

	Diet Pills	No Diet Pills	Total
No Weight Loss	80	20	100
Weight Loss	100	100	200
Total	180	120	300

             We want to see if losing weight is independent of taking the diet pills.

Test statistic:

Explanation:

is it a

normal distribution, t distribution with 29 degrees of freedom, t-distribution with 70 degrees of freedom, Chi-square with 2 degrees of freedom, Chi-square with 1 degree of freedom

Answer 1