Question 2)

Question 6 0.5 pts Between the options below, which is the most appropriate hypothesis test to determine whether there is support for the statement that the average difference between the actual and estimated length is more than 5 ft? Two-sample paired T-test (upper-tailed) Two-sample T-test assuming equal variances (upper-tailed) Two-sample T-test assuming unequal variances (upper-tailed) A B C D E F G 4 H 1 Pile Foundation Data 2 3 Pile Pile Length (ft.) Pile Length (ft.) 4 Number Estimated Actual 5 1 10.58 18.58 6 2 10.58 18.58 7 3 10.58 18.58 8 4 10.58 18.58 g 5 10.58 28.58 10 6 10.58 26.58 11 7 10.58 17.58 12 8 10.58 27.58 13 9 10.58 27.58 14 10 10.58 37.58 15 11 10.58 28.58 16 12 5.83 1.83 17 13 5.83 8.83 18 14 5.83 8.83 19 15 5.83 8.83 20 16 10.83 16.83 21 17 10.83 19.83 22 18 10.83 18.33 23 19 10.83 14.83 24 20 21.33 12 25 21 16.33 27 26 22 21.33 42 27 23 21.33 46 28 24 21.33 46 29 25 31.33 57 30 26 41.08 55.75 31 27 41.08 55.75 32 28 41.08 55.75 33 29 46.33 57 34 30 61.33 77 35 31 61.33 76 36 32 61.33 75 37 33 61.33 75 38 34 61.33 36 39 35 61.33 56.42 40 36 61.33 45 41 37 61.33 45.42 42 38 61.33 37 43 39 11.33 8 44 40 5.83 2.83 45 41 5.83 2.83 Question 11 0.5 pts Which hypothesis test is the most appropriate to determine whether the average number of friends is different for males than females? * Hint* - remember to use alpha = 0.05 if it is needed. Two-Sample F-test for equal variances Two-sample Z-test (two-tailed) Two-sample paired T-test (two-tailed) Two-sample T-test assuming equal variances (two-tailed) Two-sample T-test assuming unequal variances (two-tailed) A B C D E F G H. Facebook Survey 1 2 3 4 Friends 150 400 120 500 260 70 90 250 110 30 80 30 200 240 150 90 Student Gender Hours online/week 1 female 4 2 female 10 3 male 7 4 male 15 5 female 9 6 female 5 7 female 7 8 male 5 9 female 12 10 female 2 11 female 6 12 female 2 13 male 3 14 female 6 15 male 6 16 male 4 17 female 8 18 male 10 19 female 4 20 male 4 21 male 6 22 female 4 23 female 5 24 female 9 25 female 12 26 male 8 27 female 2 28 female 7 29 male 6 30 male 4 31 female 2 32 male 5 33 female 7 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 340 450 50 120 180 280 60 100 380 430 80 170 90 50 50 70 170