Determine whether the value is a parameter or statistic:

a) A sample of college students reveals 60% took calculus. Select an answer Parameter Statistic

b) In a sample of students who passed statistics, 70% used statistics in their future careers. Select an answer Parameter Statistic

c) Using Consumer Reports, a random sample of new cars gave an average of mpg 30.5. Select an answer Parameter Statistic

d) Facebook tested the mean amount of time its users use the site each day, and they found the mean amount of time all users use the site is 80 minutes each day. Select an answer Parameter Statistic