Your CEO Has Followed Your Advice and Now Wants You

Multiple Choice

Your CEO has followed your advice and now wants you to measure effect sizes. You report a Pearson's r of 0.50 for the impact of Unblock Me Now drain cleaner on reducing drain blockage time. Your CEO wants to know if this is bad, as she remembers that a p-value of 0.30 is not good. What do you tell her?

A) You tell her that effect size and p-values are not the same and that a Pearson's r of 0.50 is a medium effect, suggesting she should rollout the launch of Unblock Me Now.
B) You tell her that effect size and p-values are not the same and that a Pearson's r of 0.50 is a small effect, suggesting she should stop the launch of Unblock Me Now until more data analysis is done.
C) You tell her that effect size and p-values are the same and that a Pearson's r of 0.50 means there is no statistically significant effect. Unblock Me Now should cease production.
D) You tell her that effect size and p-values are not the same and that a Pearson's r of 0.50 is a large effect, suggesting she should rollout the launch of Unblock Me Now.