Question 1 (2 points) A study is conducted to see the effectiveness of two COVlD-19 vaccines: A and B. Vaccine A works effectively on 205 people in a sample of 220. Vaccine B works effectively on 585 people out of a sample of 650. Does it appear that there is a significant difference in the effectiveness of these two vaccines? Conduct a hypothesis test at 5% level of significance. Hint: Please keep to three places past the decimal in determining proportions! What are the null and alternative hypotheses for the test? 0 A) Ho: PA-PB s 0 vs HA: PA-PB > 0 Q B) H0: PA-PB = 0 vs HA: PA-PB 0 O C) Ho: PA-PB 2 0vs HA: PA-PB