7) All work on the project must be your own; no joint efforts allowed. 1. a) A physical education director claims by taking a special vitamin, a weight lifter can increase his strength. Eight athletes are selected and given a test of strength, using the standard bench press. After two weeks of regular training, supplemented with the vitamin, they are tested again. Test the vitamin regimen is effective in increasing strength at the .05 level of significance. Each value in the data that follow represents the maximum number of pounds the athlete can bench press. athlete 2 3 4 5 6 7 8 Before 210 230 182 205 262 253 219 216 after 219 236 179 204 270 250 222 216 Did you subtract before - after or after - before? claim null hypothesis..... alternative hypothesis... Calculator Screen Name.. test statistic pvalue/alpha comparison....... decision Conclusion b) Construct a 95% confidence interval for, Ma. Interpret the interval in a sentence. Confidence Interval Name Interval Interpret 1