Please help!

1. Is it easier to read a book on a computer screen (i.e., e-book), or with an old-fashioned hard copy? Is this effect dependent on a person's age (i.e., adolescent, or adult). Imagine you were to conduct this 2 (Reading Medium) by 2 (Age) between-groups study, and measure the ease of reading using a well- standardized measure of difficulty (scores ranging from 0 to 20, with higher scores indicating more difficulty in reading). a. Create a data matrix and the associated line graph that would suggest a main effect of Reading Medium. b. Create a data matrix in which your line graph illustrates an "X", with the lines intersecting at the centre. What treatment effect(s) does this suggest might be significant? c. Create a data matrix and a line graph that suggests a main effect of Reading Medium and an interaction between Reading Medium and Age. 2. For each of the following examples, indicate whether the graph suggests a main effect of Time, Group, or both, and/or a Time X Group interaction. For this exercise, consider a difference between marginal or cell means of +1.5 as significant. HNW w 2 1 O 0 Time 1 Time 2 Time 1 Time 2 A Group A - - - Group B B - Group A - - Group B N HNWAUTO Time 1 Time 2 Time 1 Time 2 C Group A O Group B D Group A Group B