How many separate groups of participants would be needed for an independent-measures, two-factor study with 2 levels of factor A and 3 levels of factor B?

What are two reasons for conducting a study with more than two levels of a factor?

If no main effects emerge in a two-factor ANOVA, there must also be no significant interaction between the two factors. Group of answer choices True False

for a two way factor anova comparing the possible interaction between religion and anxiety, what is the alternative

If the results of a two-factor ANOVA show no main effect for factor A but show a significant interaction, then the results indicate that factor A has no effect on the subjects' scores. True or False

An article describes an experiment in which several types of boxes were compared with respect to compression strength (Ib). The table below presents the results of a single-factor ANOVA experiment involving I = 4 types of boxes. Туре of Box Compression Strength (Ib) Sample Mean Sample SD 1 655.5 788.3 734.3 721.4 679.1 699.4 713.00 46.55 2 789.2 772.5 786.9 686.1 732.1 774.8 756.93 40.34 3 737.1 639.0 696.3 671.7 717.2 727.1 698.07 37.20 535.1 628.7 542.4 559.0 586.9 520.0 562.02 39.87 Suppose that the compression strength observations on the fourth type of box had been 657.1, 750.7, 664.4, 681.0, 708.9, and 642.0 (obtained by adding 122 to each previous x). Assuming no change in the remaining observations, carry out an F test with a = 0.0 State the appropriate hypotheses. O Ho: H1 * M2 # Hz# H4 H: at least two u's are equal Ho: Hq = Hz = Mz =H4 H: at least two µ's are unequal O Ho: H1 = H2 = !3= H4 H: all four u,'s are unequal O Ho: H1 # 42 # Hz# H4 H: all four u's are equal Calculate…

Question The result of a One-Way ANOVA for total stress symptoms among four groups of teachers (pre-k, elementary, middle, high school) was F(3, 117) = 3.82, p < .05. The corresponding effect size was η2 = .265. What can be concluded about these results? Answer choices: For total stress symptoms, there was not significant difference among groups.   For total stress symptoms, there was a significant difference among groups. The effect size was small.   For total stress symptoms, there was a significant difference among groups. The effect size was medium.   For total stress symptoms, there was a significant difference among groups. The effect size was very large.

I need help with this table.