A researcher randomly assigns 33 subjects to one of three groups. The first group receives technical dietary information interactively from an on-line website. Group 2 receives the same information from a nurse practitioner, while group 3 receives the information from a video tape made by the same nurse practitioner. The researcher looks at three different ratings of the presentation: difficulty, usefulness, and importance, to determine if there is a difference in the modes of presentation. In particular, the researcher is interested in whether the interactive website is superior because that is the most cost-effective way of delivering the information.

Grp1, Useful Grp1, Difficulty Grp1, Importance Grp2, Useful Grp2, Difficulty K-S: p > .20 K-S: p > .20 K-S: p > .20 K-S: p > .20 K-S: p >.20 Lilliefors: p <.05 lilliefors: p grp2 importance grp3 useful difficulty k-s:>.20 K-S: p >.20 K-S: p > .20 K-S: p > .20 Lilliefors: p <.05 lilliefors: p multivariate tests of significance sigma-restricted parameterization effective hypothesis decomposition test value f effect error df intercept wilks pillai hotelling co box m roy effect: group for on all variables chi-sqr. useful difficulty importance cell no. mean nw w n win in>