Consider two samples from two normal populations: 24 25 24 25 23 2? 23 28 27 25 and 21 17 21 22 14 14 21 26 21 26 23 21 Suppose we wish to test H0 p1 - p2 = 7 against Ha p1 - p2 at 7 and assume the variances are the same for both samples. Select all the correct choices. C t = 4.863: t = 4.9361 reject H0 at o: = 0.05. not reject H0 at o: = 0.05. df=20 df=16 Question 4 {1 point} Suppose we want to test H0: p. = 50 against Ha: p. > 50, at a significance level of 0: = 0.0505 based on a random sample of 40. What is the probability of accepting the null hype-thesis when in fact p. = 52 {type II error] and s = 4. Please choose the best answer. Q a} 0.186? O 0} 0.0049 0 0] 0.4325 0 010.3192 0 e} 0.0643