B. In a study of the effectiveness of physical exercise in weight reduction, a group of 16 persons engaged in a prescribed program of physical exercise of one month showed the following results below. Use c= 0.10 to test the null hypothesis that the prescribed program of exercise is not effective in reducing weight. Weight before (in pounds) Weight after (in pounds) 209 196 178 171 169 170 212 207 180 177 192 190 158 150 180 180 170 164 153 152 183 179 165 162 201 199 170 173 243 231 144 140 1. Hạ: H: 2. One-tailed or two-tailed? 3. Dependent or independent? 4. Degree of freedom: gff = 5. Critical values, critical region: 6. Test statistic: 7. Decision based on test statistic: Reject or do not reject H,? Why? 8. p-value: 9. Decision based on p-value: Reject or do not reject H,? Why? 10. Paste here the result from excel/ghstat/online calculator.

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