A previous study claims that 75% of all students graduate on time. You believe the percentage is lower than that. In a random sample of 200 students, 142 will graduate on time. At the significance level .05, what conclusion do you draw?

Group of answer choices

a. I reject the null because my p-value is more than .05

b. I fail to reject the null because my p-value is greater than .05

c. I fail to reject the null because my p-value is less than .05

d. I reject the null because my p-value is less than .05