Part i) What is the parameter of interest? OA. The proportion of the 160 BlueSky Air flights that arrive on time. O B. All BlueSky Air flights. OC. The proportion of all BlueSky Air flights that arrive on time. OD. Whether a BlueSky Air flight arrives on time. Part ii) Let p be the population proportion of flights that arrive on time. What are the null and alternative hypotheses? OA. Null: p > 0.80. Alternative: p 5 0.80. OB. Null: p = 0.80. Alternative: p > 0.80. OC. Null: p = 0.80. Alternative: p # 0.80. OD. Null: p = 115/160. Alternative: p # 115/160. E. Null: p = 0.80. Alternative: p