For each pair of variables, indicate what association you expect: positive, negative or none. Provide a sentence explaining your reasoning for each pair of variables. Extra credit will only be granted for solutions that include an explanation.
a. A person's height; the person's weight.
b. A person's blood alcohol level; That person's ability to solve a puzzle.
c. A person's salary; the size of a person's house
d.The number of pool passes sold weekly; The number of bikes sold weekly.