Question

Complete the following for each problem below (this should all be calculated by hand, show work to receive full credit): a) State the null and alternative hypotheses (2 pts) b) Choose the appropriate statistical procedure (independent or paired t-test) (2 pt) c) Identify the level of significance and corresponding critical value (2 pts) d) Calculate t (5 pts) e) Express your results in terms of p-values (p < or p > α) (1 pt) f) Determine whether your results are significant (2 pt) g) State in one or two sentences your conclusions (2 pts)

6) Cholesterol measurements from 54 vegetarians and 51 nonvegetarians yield the following data:

Vegetarians 115 140 160 165 175 215 125 140 160 170 180 215 125 140 160 170 180 225 130 145 160 170 180 230 130 145 165 170 180 130 150 165 170 180 130 150 165 170 185 135 150 165 170 185 135 155 165 175 185 140 160 165 175 200

Nonvegetarians 105 150 175 190 210 245 110 160 175 190 210 115 165 175 190 210 125 165 180 195 210 125 165 180 200 215 130 170 180 200 220 135 170 180 200 230 145 170 185 200 230 145 170 185 200 240 150 170 190 205 240

Do vegetarians have lower cholesterol levels than nonvegetarians? Let α = .01.

Answer 1