Data was collected consisting of the number of alcoholic drinks students have during the week and their GPA. The data was analyzed separately based on student gender. It was found that the correlation between the number of alcohol drinks ingested weekly and GPA was -0.47 for males and -0.26 for females
(a) Interpret the meaning of r = -.47 for the males.
(b) Justify why the following statement is either true or false: The result of r = - .47 for males indicates alcohol intake causes the grade point average of the typical male student (but not necessarily all male students) to decline.