Questions 9-15 Laptop access and GPA. Based on a random sample of 500 high-school students without laptops, a non-profit organization randomly lends laptops to 250 of them for the fall semester. A researcher wants to investigate whether being lent a laptop affects a student's grades, and collects data on the students' GPA for the Fall semester.Question 11 10 pts Test for randomization. The researcher is concerned about possible failures in the randomization process. In particular, she believes that females and low-income students were more likely to receive laptops. To test whether the laptops were randomly assigned to individuals, we estimate the following regression: Xi = 10 + 71 FEMALE: + 12 INCOMEi + vi The null hypothesis of the test for randomization is: [ Select ] A) Ho : 70 = 71 = 12 = 0 B) Ho : V1 = 72 = 0 C) Ho : 71 = 0 or 72 = 0 The null states that the treatment [ Select ] depend on sex and family income. The critical value for a 10% level test is [ Select ] The F-statistic for this test is 2.15. Therefore, we [ Select ] Ho. This is statistical evidence that the treatment [ Select ] randomly assigned