Answer Happy

The accompanying data represent the running times of files produced by two motion-picture companies. Assume that the running-time differences are approximately normally distributed. Construct a 90% confidence interval for Company 11 Time (minutes) 105 89 118 91 117 Click here to view page 1 of the table of critical values of the F-distribution, for alpha= 0.05. Click here to view page 2 of the table of critical values of the F-distribution, for alpha = 0.05. 100 102 The confidence interval is 99 83 (Round to three decimal places as needed.) 98 174 89 C If a 90% confidence interval for μ₁ −μ were created, should it be assumed that o2 = 0²?
Critical Values of the F-Distribution, for alpha = 0.05 (Page 1) Critical Values of the F-Distribution 1 V2 1 161.45 2 18.51 10.13 7.71 6.61 3 4 45 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 5.99 5.59 5.32 5.12 4.96 4.84 4.75 4.67 4.60 4.54 4.49 4.45 4.41 4.38 4.35 4.32 4.30 4.28 4.26 2 3 199.50 215.71 19.00 19.16 9.55 9.28 6.94 6.59 5.79 5.41 5.14 4.74 4.46 4.26 4.10 3.98 3.89 3.81 3.74 3.68 3.63 3.59 3.55 3.52 3.49 3.47 3.44 3.42 3.40 4.76 4.35 4.07 3.86 3.71 3.59 3.49 3.41 3.34 3.29 3.24 3.20 3.16 3.13 3.10 3.07 3.05 3.03 3.01 4 224.58 19.25 9.12 6.39 5.19 4.53 4.12 3.84 3.63 3.48 3.36 3.26 3.18 3.11 3.06 3.01 2.96 2.93 2.90 2.87 2.84 2.82 2.80 2.78 f0.05 (V1, V2) V1 5 6 230.16 233.99 19.30 19.33 9.01 6.26 5.05 4.39 3.97 3.69 3.48 3.33 3.20 3.11 3.03 2.96 2.90 2.85 2.81 2.77 2.74 2.71 2.68 2.66 2.64 2.62 8.94 6.16 4.95 4.28 3.87 3.58 3.37 3.22 3.09 3.00 2.92 2.85 2.79 2.74 2.70 2.66 2.63 2.60 2.57 2.55 2.53 2.51 6 7 236.77 19.35 8.89 6.09 4.88 4.21 3.79 3.50 3.29 3.14 3.01 2.91 2.83 2.76 2.71 2.66 2.61 2.58 2.54 2.51 2.49 2.46 2.44 2.42 8 238.88 19.37 8.85 6.04 4.82 4.15 3.73 3.44 3.23 3.07 2.95 2.85 2.77 2.70 2.64 2.59 2.55 2.51 2.48 2.45 2.42 2.40 2.37 2.36 9 240.54 19.38 8.81 6.00 4.77 4.10 3.68 3.39 3.18 3.02 2.90 2.80 2.71 2.65 2.59 V2 1 22 23 4 5 6 7 8 9 10 11 12 13 14 15 2.54 16 2.49 17 2.46 18 2.42 19 2.39 20 2.37 21 2.34 22 2.32 23 2.30 24 I
25 26 27 28 29 30 40 60 120 2 4.24 4.23 4.21 4.20 4.18 4.17 4.08 4.00 3.92 3.84 1 3.39 3.37 3.35 3.34 3.33 3.32 3.23 3.15 3.07 3.00 2 2.99 2.98 2.96 2.95 2.93 2.92 2.84 2.76 2.68 2.60 3 2.76 2.74 2.73 2.71 2.70 2.69 2.61 2.53 2.45 2.37 4 2.60 2.59 2.57 2.56 2.55 2.53 2.45 2.37 2.29 2.21 5 V1 2.49 2.47 2.46 2.45 2.43 2.42 2.34 2.25 2.18 2.10 6 2.40 2.39 2.37 2.36 2.35 2.33 2.25 2.17 2.09 2.01 7 2.34 2.32 2.31 2.29 2.28 2.27 2.18 2.10 2.02 1.94 8 2.28 25 2.27 26 2.25 27 2.24 28 2.22 29 2.21 30 2.12 40 2.04 60 1.96 120 1.88 00 2 9
Critical Values of the F-Distribution, for alpha = 0.05 (Page 2) Critical Values of the F-Distribution V2 10 12 15 20 24 30 40 1 241.88 243.91 245.95 248.01 249.05 250.10 251.14 19.40 19.41 19.43 19.45 19.45 19.46 8.79 8.74 8.70 8.66 8.64 8.62 5.96 5.91 5.86 5.80 5.77 5.75 4.74 4.68 4.62 4.56 4.53 4.50 3 5 6 7 8 10 11 12 13 14 15 16 17 18 19 20 4.06 3.64 3.35 3.14 2.98 2.85 2.75 2.67 2.60 2.54 2.49 2.45 2.41 2.38 2.35 4.00 3.94 3.87 3.57 3.51 3.44 3.28 3.15 3.22 3.07 3.01 2.94 2.91 2.85 2.77 2.79 2.69 2.60 2.53 2.48 2.42 2.38 2.34 2.31 2.28 2.72 2.62 2.53 2.46 2.40 2.35 2.31 2.27 2.23 2.20 2.65 2.54 2.46 2.39 2.33 2.28 2.23 fo.05 (V1, V2) V1 2.19 2.16 2.12 3.84 3.41 3.12 2.90 2.74 2.61 2.57 2.51 2.47 2.42 2.35 2.29 2.24 2.19 3.81 3.38 3.08 2.86 2.70 2.15 2.11 2.08 2.38 2.31 2.25 2.19 2.15 2.11 2.07 2.04 19.47 8.59 5.72 4.46 3.77 3.34 3.04 2.83 2.66 2.53 2.43 2.34 2.27 2.20 2.15 2.10 2.06 2.03 1.99 4 120 60 252.20 253.25 19.48 19.49 8.57 8.55 5.69 5.66 4.43 4.40 3.74 3.30 3.01 2.79 2.62 2.49 2.38 2.30 2.22 2.16 2.11 2.06 3.70 3.27 2.97 2.75 2.58 2.45 2.34 2.25 2.18 2.11 2.06 2.01 2.02 1.97 1.98 1.95 1.93 1.90 254.31 19.50 8.53 5.63 4.36 3.67 3.23 2.93 2.71 2.54 2.30 2.21 2.13 2.07 2.01 1.96 V2 1 1.92 1.88 1.84 HONE OG CON 7 2.40 11 12 9 10 13 14 15 16 17 18 19 20 I 4
21 22 23 24 25 26 27 28 29 30 40 60 120 2 2.32 2.30 2.27 2.25 2.24 2.22 2.20 2.19 2.18 2.16 2.08 1.99 1.91 1.83 10 2.25 2.23 2.20 2.18 2.16 2.15 2.13 2.12 2.10 2.09 2.18 2.15 2.13 2.11 2.09 2.07 2.06 2.04 2.03 2.01 2.00 1.92 1.92 1.84 1.83 1.75 1.75 1.67 12 15 2.10 2.07 2.05 2.03 2.01 1.99 1.97 1.96 1.94 1.93 1.84 1.75 1.66 1.57 20 2.05 2.01 1.96 1.92 2.03 1.98 1.94 1.89 2.01 1.96 1.91 1.86 1.98 1.94 1.89 1.84 1.96 1.92 1.87 1.82 1.95 1.93 1.91 1.90 1.89 1.79 1.70 1.61 1.52 24 1.85 1.84 1.82 1.85 1.81 1.84 1.79 1.90 1.88 1.87 1.74 1.65 1.55 1.46 30 V1 fo.05(V1,V2) 1.87 1.84 1.81 1.79 1.77 1.80 1.75 1.79 1.73 1.77 1.71 1.75 1.70 1.74 1.68 1.69 1.64 1.59 1.53 1.50 1.43 1.39 1.32 40 60 1.58 1.47 1.35 1.22 120 1.81 21 22 23 1.78 1.76 1.73 1.71 1.69 1.67 1.65 1.64 1.62 1.51 1.39 1.25 1.00 24 25 26 27 28 29 30 40 60 120 2