Which of these questions is most likely to result in response bias?

Can i get some on 18,20,& 22? or one of them

The first-serve percentage of a tennis player in a match is normally distributed with a standard deviation of 4.3%. if a sample of 15 random matches of the player is taken, the mean first-serve percentage is found to be 26.4%. what is the margin of error of the sample mean? a. 0.086% b. 0.533% c. 1.11% d. 2.22%

Which of the following would be a good name for the function that takes the weight of a box and returns the energy needed to lift it?