From the Data Bank, select a random sample of subjects, and test the hypothesis that the mean cholesterol levels of the nonsmokers, less-than-one pack- a-day smokers, and one-pack-plus smokers are equal. Use an ANOVA test. If the null hypothesis is rejected, conduct the Scheffé test to find where the difference is. Summarize the results.

Data from in Data Bank

Data Bank 988288 ID number 01 27 18 03 32 04 24 05 19 56 07 65 36 06 Age 08 8212 09 43 10 47 11 48 25 13 63 14 37 1 2 2 1 1 1 2 1 1 3 2 0 2 NEducational level Smoking status 0 1 Exercise Weight 1 1 120 0 1 0 0 0 1 2 0 0 0 2 0 1 1 2 1 0 0 1 1 2 3 0 3 196 109 Serum cholesterol 170 187 Systolic pressure 193 126 118 136 145 210 120 105 137 118 196 128 115 135 162 208 129 108 142 106 188 119 106 133 143 206 136 111 138 160 240 131 99 140 215 215 163 106 151 127 201 132 111 134 132 215 138 109 135 199 148 115 210 115 114 242 149 101 193 142 01 Sodium 146 141 152 109 144 Gender LL M F MSM Marital status M M F S F W M W M D F M F D M D F S F D M M