these 3 please just the answers asap thanks

Question 2 (1 point) Consider two samples from two normal populations: 24 25 24 25 23 27 23 28 27 25 and 21 17 21 22 14 14 21 26 21 26 23 21 Suppose we wish to test H0 p1 - p12 = 4 against Ha l11 - [12 at 4 and assume the variances are the same for both samples. Select all of the correct choices. [:1 t = 0.3876 0 not reject H0 at or = 0.05. Cde=2o C] reject H0 at o: = 0.05. Odf=16 C] t = 0.4132 Question 4 (1 point) Consider two samples from two normal populations: 24 25 24 25 23 27 23 28 27 25 and 21 17 21 22 14 14 21 26 21 26 23 21 Suppose we wish to test H0 H1 - [12 = 8 against Ha p11 - p12 as 8 using the degrees of freedom (Note 7.9 of text): 2 2 83+s' K\": n: (si/mf + (aim) 1111 n21 df= This is sometimes referred to as the Welch test. Select the following correct choices: [3 a) reject H0 at o: = 0.05. C] b) t = -2.7859 C] c) df = 20 C] d) df =16 D e) t = -2.6133 D f) not reject H0 at o: = 0.05. Question 5 (1 point) Consider two samples from two normal populations: 24 25 24 25 23 27 23 28 27 25 and 21 17 21 22 14 14 21 26 21 26 23 21 Suppose we wish to test H0 \"1 - H2 = 6.75 against Ha I11 - I12 at 6.75. Select the following correct choices: C] a) reject H0 at (x = 0.07. C] b) reject H0 at a = 0.10. C] c) reject H0 at (X = 0.05. C] d) not reject H0 at at = 0.07. D e) not reject H0 at or = 0.05. O f) not reject H0 at {x = 0.10. 7 Hide hint for Question 5 t.035=2.055, (\"=9