Question

drug company promises to help people lose at least 3 pounds per week. 15 people use the drug. they lose an average of 2.8 lbs per week with a standard deviation of .5lbs. is this a left tail or right tail and why?

Answer 1

I am not sure what you are asking.

If you are asking if the distribution is positively or negatively skewed, there is no indication of either.