For each of the following statements, explain whether you think the variables will have positive correlation, negative correlation, or no correlation.
Support your opinion.
(a) Number of children in the household under the age of 3 and expenditures on diapers
(b) Interest rates on car loans and number of cars sold
(c) Number of hours per week on the treadmill and cholesterol level
(d) Price of a Big Mac and number of McDonald’s French fries sold in a week
(e) Shoe size and IQ