A student wondered if more than 10% of students enrolled in an introductory Chemistry class dropped before the midterm He noticed that 2 out of 15 of his friends in the class dropped before the midterm Based on his sample, he wants to perform a hypothesis test Which of the following statements is true? Choose the correct answer below O A. Because np 5, a one-sample t-test should be performed. O D. Because np > 5, a one-sample z-test for proportions can be performed 10 of