b) A researcher wants to study the effect of aspirin on an individual's blood clotting time. Twelve subjects were randomly selected. and blood clotting times were measured (in seconds). without taking aspirin and three hours after taking two aspirin tablets. Assume that the population of paired differences is (approximately) normally distributed. The MINITAB output is shown below. Paired T-Test and CI: Without Aspirin, With Aspirin Paired T for Hith Aspirin - Without Aspirin N Mean StDev SE Mean Without Aspirin 12 11.733 0.743 0.216 with Aspirin 12 11.892 0.705 0.204 Difference 12 I 0.507 TTest Of mean difference 2 D: TValue i) Find the missing values of A, B and C in the above output. (4 marks) ii) Construct a 95% condence interval for the mean difference in blood clotting time for without and with taking aspirin? (4 marks) iii) It is thought that the blood clotting time would increase after a patient takes aspirin. Comment on this statement based on the condence interval in (ii). (2 marks)