| ID | Sex | Sex1 | Age | LOS | DRG | Charges | Medicare | Diag | ICD-9 | | Use the data on the cost worksheet of chp9-1 that show the hospital cost for a randomly selected sample of 34 women and 34 men. |
| 1 | F | 1 | 46 | 4 | 294 | $ 2,426.48 | $ 2,003.62 | 2 | 0 | | a. Rearrange the data so that they can be analyzed using regression and add an independent variable that is 1 for women and 0 for men |
| 2 | F | 1 | 87 | 8 | 139 | $ 6,815.61 | $ 1,072.17 | 4 | 4 | | b. Test the hypothesis that the cost for women is equal to the cost for men (against the alternative that they are not equal) using regression |
| 3 | F | 1 | 70 | 10 | 34 | $ 7,596.68 | $ 4,096.98 | 6 | 0 |
| 4 | M | 0 | 72 | 5 | 140 | $ 6,450.77 | $ 1,710.79 | 5 | 0 |
| 5 | F | 1 | 82 | 3 | 141 | $ 3,542.79 | $ 1,914.90 | 3 | 7 |
| 6 | F | 1 | 85 | 2 | 15 | $ 2,590.86 | $ 2,601.14 | 5 | 4 |
| 7 | F | 1 | 73 | 5 | 294 | $ 5,082.83 | $ 2,035.31 | 7 | 2 |
| 8 | M | 0 | 65 | 6 | 241 | $ 3,580.55 | $ 2,320.42 | 6 | 0 |
| 9 | M | 0 | 73 | 6 | 335 | $ 11,045.79 | $ 4,184.26 | 1 | 0 |
| 10 | F | 1 | 94 | 14 | 148 | $ 19,708.11 | $ 12,158.49 | 4 | 0 |
| 11 | F | 1 | 94 | 11 | 89 | $ 8,953.38 | $ 4,345.84 | 4 | 0 |
| 12 | M | 0 | 79 | 5 | 127 | $ 7,000.21 | $ 3,993.48 | 5 | 0 |
| 13 | M | 0 | 82 | 6 | 89 | $ 5,330.24 | $ 3,408.07 | 4 | 0 |
| 14 | F | 1 | 76 | 3 | 122 | $ 6,864.63 | $ 3,637.35 | 5 | 4 |
| 15 | M | 0 | 72 | 3 | 336 | $ 4,318.13 | $ 2,676.01 | 2 | 0 |
| 16 | F | 1 | 91 | 7 | 321 | $ 6,424.30 | $ 1,510.20 | 3 | 0 |
| 17 | F | 1 | 90 | 6 | 174 | $ 5,184.53 | $ 3,642.44 | 6 | 5 |
| 18 | F | 1 | 83 | 3 | 143 | $ 1,871.78 | $ 1,167.65 | 6 | 0 |
| 19 | F | 1 | 82 | 11 | 358 | $ 11,179.97 | $ 3,432.13 | 9 | 6 |
| 20 | F | 1 | 49 | 2 | 140 | $ 3,405.38 | $ 1,710.79 | 1 | 0 |
| 21 | F | 1 | 88 | 2 | 143 | $ 1,731.73 | $ 1,979.28 | 4 | 7 |
| 22 | F | 1 | 75 | 2 | 159 | $ 5,384.92 | $ 3,316.59 | 2 | 0 |
| 23 | M | 0 | 81 | 7 | 89 | $ 5,216.91 | $ 3,613.06 | 2 | 4 |
| 24 | F | 1 | 76 | 4 | 294 | $ 2,489.65 | $ 2,201.93 | 3 | 0 |
| 25 | F | 1 | 85 | 10 | 473 | $ 8,244.25 | $ 12,772.75 | 4 | 0 |
| 26 | F | 1 | 84 | 6 | 128 | $ 3,548.05 | $ 2,163.29 | 8 | 4 |
| 27 | F | 1 | 77 | 3 | 15 | $ 4,713.26 | $ 1,801.73 | 4 | 0 |
| 28 | F | 1 | 94 | 6 | 121 | $ 5,804.21 | $ 5,282.36 | 5 | 7 |
| 29 | F | 1 | 66 | 6 | 128 | $ 2,945.22 | $ 2,849.72 | 2 | 0 |
| 30 | M | 0 | 72 | 1 | 140 | $ 1,035.75 | $ 1,685.62 | 5 | 4 |
| 31 | M | 0 | 78 | 3 | 209 | $ 17,005.45 | $ 7,534.44 | 1 | 7 |
| 32 | F | 1 | 86 | 3 | 143 | $ 4,637.96 | $ 1,447.84 | 5 | 0 |
| 33 | F | 1 | 70 | 5 | 209 | $ 17,480.97 | $ 7,566.98 | 5 | 0 |
| 34 | M | 0 | 72 | 5 | 96 | $ 5,029.09 | $ 3,306.80 | 8 | 4 |
| 35 | M | 0 | 91 | 3 | 144 | $ 3,078.99 | $ 3,351.64 | 5 | 4 |
| 36 | M | 0 | 75 | 2 | 90 | $ 2,146.99 | $ 1,968.05 | 2 | 4 |
| 37 | F | 1 | 83 | 6 | 88 | $ 5,482.93 | $ 3,147.39 | 2 | 0 |
| 38 | M | 0 | 82 | 1 | 183 | $ 1,078.56 | $ 1,386.42 | 6 | 5 |
| 39 | F | 1 | 82 | 10 | 430 | $ 9,931.21 | $ 3,530.00 | 1 | 0 |
| 40 | F | 1 | 92 | 2 | 138 | $ 2,451.69 | $ 2,266.56 | 2 | 4 |
| 41 | F | 1 | 79 | 2 | 88 | $ 2,834.68 | $ 3,579.24 | 1 | 0 |
| 42 | F | 1 | 69 | 2 | 447 | $ 1,547.81 | $ 988.00 | 3 | 0 |
| 43 | F | 1 | 76 | 3 | 183 | $ 1,876.70 | $ 1,235.80 | 1 | 0 |
| 44 | M | 0 | 73 | 2 | 140 | $ 2,781.28 | $ 1,483.79 | 4 | 0 |
| 45 | F | 1 | 83 | 6 | 127 | $ 6,460.59 | $ 3,993.48 | 5 | 0 |
| 46 | F | 1 | 80 | 4 | 444 | $ 3,026.42 | $ 1,918.32 | 1 | 6 |
| 47 | F | 1 | 76 | 10 | 493 | $ 14,769.92 | $ 5,594.68 | 4 | 5 |
| 48 | F | 1 | 77 | 7 | 324 | $ 4,425.44 | $ 1,531.55 | 5 | 5 |
| 49 | F | 1 | 85 | 4 | 140 | $ 5,151.52 | $ 1,710.79 | 5 | 0 |
| 50 | F | 1 | 70 | 1 | 140 | $ 2,404.39 | $ 735.58 | 1 | 4 |
| 51 | M | 0 | 81 | 2 | 140 | $ 5,019.86 | $ 1,730.79 | 2 | 0 |
| 52 | F | 1 | 83 | 9 | 138 | $ 10,421.01 | $ 2,384.12 | 5 | 0 |
| 53 | M | 0 | 76 | 2 | 269 | $ 4,860.83 | $ 5,688.67 | 4 | 1 |
| 54 | F | 1 | 88 | 3 | 140 | $ 2,694.11 | $ 1,564.50 | 2 | 0 |
| 55 | M | 0 | 88 | 4 | 208 | $ 2,421.63 | $ 1,346.94 | 2 | 0 |
| 56 | F | 1 | 89 | 2 | 15 | $ 3,311.66 | $ 2,065.49 | 3 | 0 |
| 57 | M | 0 | 39 | 1 | 434 | $ 1,596.91 | $ 392.00 | 5 | 3 |
| 58 | F | 1 | 89 | 5 | 88 | $ 5,399.67 | $ 3,048.91 | 4 | 4 |
| 59 | M | 0 | 80 | 12 | 78 | $ 17,605.59 | $ 4,432.93 | 9 | 7 |
| 60 | F | 1 | 71 | 7 | 89 | $ 11,098.70 | $ 4,256.70 | 3 | 4 |
| 61 | F | 1 | 90 | 4 | 89 | $ 3,674.03 | $ 3,609.84 | 3 | 0 |
| 62 | M | 0 | 91 | 4 | 316 | $ 3,720.09 | $ 4,269.96 | 6 | 2 |
| 63 | F | 1 | 73 | 1 | 140 | $ 2,472.64 | $ 2,356.05 | 4 | 0 |
| 64 | F | 1 | 77 | 7 | 166 | $ 7,792.24 | $ 4,538.13 | 1 | 5 |
| 65 | F | 1 | 78 | 2 | 175 | $ 3,489.88 | $ 1,430.32 | 3 | 5 |
| 66 | F | 1 | 79 | 4 | 203 | $ 4,655.83 | $ 3,965.21 | 9 | 6 |
| 67 | F | 1 | 85 | 14 | 87 | $ 10,242.50 | $ 4,531.65 | 6 | 0 |
| 68 | F | 1 | 74 | 1 | 296 | $ 1,599.82 | $ 2,628.95 | 3 | 0 |
| 69 | M | 0 | 78 | 10 | 294 | $ 6,015.34 | $ 2,003.62 | 5 | 0 |
| 70 | F | 1 | 92 | 2 | 127 | $ 1,905.65 | $ 3,993.48 | 5 | 0 |
| 71 | M | 0 | 56 | 1 | 294 | $ 707.70 | $ 2,102.01 | 3 | 2 |
| 72 | M | 0 | 76 | 2 | 183 | $ 3,004.67 | $ 1,423.87 | 4 | 5 |
| 73 | F | 1 | 84 | 10 | 197 | $ 18,290.04 | $ 6,862.34 | 5 | 0 |
| 74 | F | 1 | 75 | 3 | 132 | $ 5,621.92 | $ 1,772.78 | 5 | 7 |
| 75 | F | 1 | 68 | 7 | 240 | $ 5,547.71 | $ 4,565.48 | 5 | 7 |
| 76 | M | 0 | 50 | 2 | 182 | $ 2,581.72 | $ 2,238.61 | 3 | 5 |
| 77 | M | 0 | 49 | 9 | 436 | $ 7,024.64 | $ 2,441.00 | 5 | 0 |
| 78 | M | 0 | 76 | 3 | 175 | $ 4,242.10 | $ 1,344.35 | 4 | 5 |
| 79 | M | 0 | 76 | 3 | 207 | $ 4,286.90 | $ 3,045.51 | 2 | 5 |
| 80 | F | 1 | 67 | 2 | 359 | $ 12,313.78 | $ 2,393.04 | 3 | 0 |
| 81 | M | 0 | 96 | 11 | 79 | $ 8,217.27 | $ 5,462.63 | 4 | 0 |
| 82 | F | 1 | 83 | 16 | 127 | $ 10,655.80 | $ 3,277.48 | 5 | 0 |
| 83 | F | 1 | 77 | 3 | 182 | $ 3,620.78 | $ 2,064.43 | 5 | 5 |
| 84 | M | 0 | 86 | 5 | 346 | $ 4,734.98 | $ 3,731.44 | 2 | 0 |
| 85 | F | 1 | 80 | 1 | 140 | $ 1,820.41 | $ 1,564.50 | 2 | 0 |
| 86 | F | 1 | 61 | 8 | 296 | $ 8,954.81 | $ 3,351.61 | 4 | 2 |
| 87 | M | 0 | 80 | 5 | 236 | $ 4,177.90 | $ 2,314.57 | 6 | 0 |
| 88 | F | 1 | 78 | 2 | 122 | $ 5,756.89 | $ 2,156.63 | 3 | 4 |
| 89 | F | 1 | 71 | 10 | 90 | $ 12,919.48 | $ 2,711.94 | 3 | 0 |
| 90 | M | 0 | 90 | 9 | 89 | $ 7,022.47 | $ 2,589.84 | 2 | 0 |
| 91 | F | 1 | 91 | 7 | 296 | $ 6,823.60 | $ 3,516.57 | 6 | 4 |
| 92 | F | 1 | 69 | 4 | 248 | $ 2,384.47 | $ 2,084.09 | 5 | 0 |
| 93 | M | 0 | 88 | 5 | 278 | $ 3,169.19 | $ 2,131.82 | 4 | 0 |
| 94 | F | 1 | 76 | 2 | 143 | $ 2,721.63 | $ 1,150.43 | 6 | 7 |
| 95 | F | 1 | 83 | 5 | 321 | $ 3,034.14 | $ 1,630.16 | 7 | 0 |
| 96 | F | 1 | 75 | 3 | 127 | $ 5,041.93 | $ 3,645.46 | 1 | 4 |
| 97 | M | 0 | 83 | 7 | 140 | $ 8,118.92 | $ 1,730.79 | 5 | 0 |
| 98 | M | 0 | 68 | 9 | 79 | $ 10,955.29 | $ 5,662.61 | 8 | 4 |
| 99 | M | 0 | 75 | 7 | 101 | $ 5,363.25 | $ 3,409.08 | 5 | 5 |
| 100 | M | 0 | 60 | 5 | 14 | $ 6,572.60 | $ 3,892.79 | 6 | 4 |