Dr Sherri Brock's Diet Pills Are Supposed to Cause Significant

Essay

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.
$$\begin{array} { l | r | r | r } & \text { Diet Pill } & \text { No Diet Pills } & \text { Total } \\\hline \text { No Weight Lo55 } & 80 & 20 & 100 \\\hline \text { Weight Loss } & 100 & 100 & 200 \\\hline \text { Total } & 180 & 120 & 300\end{array}$$ We want to see if losing weight is independent of taking the diet pills.
a. Compute the test statistic.
b. Using the p-value approach at 95% confidence, test to determine if weight loss is independent on taking the pill.
c. Use the critical method approach and test for independence.