=== 2 LI Conditional Formatting v E Insert v Calibri (Body) 12 v A A General E Format as Table v X Delete v en v A v Paste BIUV $ v % 9 Editing Analyze Data Create and Share Adobe PDF Cell Styles v E Format v T20 fx A B D E F G K L. M P R U V X Y Sample i Brand 1 Brand 2 1 99.11 110.65 A major retailer wants to choose between two equally-priced brands of compact fluorescent lamps. To do this, they take a random sample of 100 lamps of each brand. The lifetimes, measured in hours, of the lamps are shown on this sheet. To make the decision, they must first determine whether the underlying population variances are equal. Assume lifetimes follow normal distribution. Use a significance level of 5%. 99.45 92.24 3 98.39 96.63 4 97.07 99.45 99.97 102.55 a) State the null and alternate hypotheses. b) What is the value of the test statistic? c) What is the critical value of the test? d) What is your conclusion? Explain it in the context of the problem. 6 100.06 98.2 6. 109.60 96.53 98.13 104.64 9 107.73 88.03 10 95.58 96.87 2 3 11 96.98 96.02 12 100.47 97.33 38 92.23 101.57 64 102.03 99.62 4 13 101.23 105.14 39 99.87 105.21 65 99 100.96 90 101.17 100.65 5 14 100.39 99.86 40 98.7 92.84 66 101.36 99.05 95.72 91 96.65 96.33 6 15 106.07 93.81 41 97.7 99.89 67 98.75 92 100.27 89.44 16 98.02 92.26 42 102.67 94.24 68 99.03 90.28 93 98.99 103.91 8 17 100.26 103.67 43 100.3 96.43 69 98.75 88.87 94 103.24 103.96 18 102.48 93.61 44 101.76 93.64 70 94.8 110.15 95 100.29 87.99 19 97.88 97.28 45 100.11 97.44 71 101.26 113.99 96 93.25 98.86 20 102.58 102.51 46 103.05 109.93 72 99.08 97.37 97 102.86 96.47 2 3 21 101 106.59 47 100.82 100.20 73 103.6 102.17 98 102.65 101.32 22 97.01 100.90 48 99.94 101.34 74 102.56 95.82 99 102.74 103.46 4 23 103.91 98.67 49 98.89 97.41 75 95.44 104.44 100 98.78 96.70 24 96.23 102.64 50 95.22 109.89 76 98.26 108.21 25 99.84 99.76 51 99.55 107.33 77 95.05 100.28 7 8 9 26 102.49 108.11 52 102.67 95.24 78 100.65 92.43 27 97.8 101.96 53 98.43 91.33 79 99.86 91.92 28 101.1 98.36 54 101.69 102.49 80 105.21 81.47 29 99.51 101.93 55 100.86 106.89 81 101.26 92.58 1 98.86 99.19 30 99.49 112.25 56 103.68 82 103.88 106.49 2 31 101.63 105.35 57 103.97 83 106.71 102.46 3 32 104.85 100.95 58 95.9 93.47 84 100.07 92.72 4 33 99.69 85.00 59 101.85 94.93 85 99.3 101.97 34 97.68 95.50 60 96.05 101.94 86 103.74 96.85 6 7 8 9 35 100.31 111.24 61 103.36 98.81 87 99.6 96.92 36 95.29 109.34 62 102.31 103.66 88 104.24 103.56 37 101 99.67 63 103.15 102.03 89 100.59 87.85 Sheet1 國

Please do sub part b only.thx

Use the table to convert one dollar directly in one step from US dollars to yen?

Please don't use excel formula to execute the attached image A statistics class has 20 female students and 10 male students. Average exams score for the females is 78.5 and the average exam score for the males is 72.1. What is the average exam score of the entire class?