A researcher sampled 16 couples and measured the mean differ…

A researcher sampled 16 couples and measured the mean difference in their marital satisfaction. Each couple was paired and the differences in their ratings (on a 7-point scale) were taken. If the mean difference in satisfaction ratings for this sample was 1.8±2.0 (MD +/-SD), then what is the decision at a .05 level of significance?

If an analysis of variance is used for the following data, w…

If an analysis of variance is used for the following data, what would be the effect of changing the value of M2 to 15?                                                              Sample Data          M1 = 10      M2 = 20  SS1 = 90      SS2 = 70