Normal Text Bo . 31 6 In this study, students were randomly assigned one of three-types of books. either a classic book (e.g., Treasure Island), # modern book (e.g., Jumanji) or a modern cartoon book (e.g., Captain Underpants). If the student finished the first book, they were given a second book of from the same type. At the end of the 6-week reading period, students were asked. several questions, including whether or not their parents had read any part of the book(s) with them. Our research bypotbeis was that the type of book influenced how likely parents were to read with their children. Specifically, we expected that parents would be most likely to read Classic.books with their children and least likely to read.modern cartoon books with their children, with the likelihood of reading modern books greater than that of reading modern. cartoons and less than that of reading classic books. In (a) Can this design-be used to test this-type of research hypothesis? in # NOH # # Can't tell from the available information # # YesH (b) The pairwise comparison of the classic-books.vs. the modern-books has a Chi-square.(rounded to-2.decimals) of w # classic.books .vs. modern cartoon has a Chi-square.(rounded.to-2.decimals) of . and the comparison of modern . books ys, modern cartoon has a.Chi-square .(rounded to.2 decimals) of . .The Chi-square critical.value for all these. pairwise.comparisons .(rounded to.2 decimals) is (c) Based on the pairwise Chi-square-analyses .you.just computed, does the pattern of these results support our RH:2 # # No, none of the pairwise comparisons match the .RH:# # # No, only one of the pairwise-comparisons.matches the.RH: # * No, only two of the pairwise comparisons match the RH:# # # Yes, these are the hypothesized .results # # Can't tell from the available information # (d) The effect size for the pairwise comparison of classic .books and modern books.is @ the effect size for the pairwise . # comparsion of classic-books and modern cartoons.is* and the effect.size for the pairwise.comparison of modern books and modern cartoons .is (use.2 decimals to calculate.and report the effect.size - always report.the effect size. as.positive).# (e) Should I-be concerned about the statistical power of the pairwise comparison of modern books and modern cartoons? # No, a significant effect.indicates there is sufficient.power.# No, this combination of p-value and effect size indicates that power probably isn't the reason for the . Donsignificant effect.# # No, an effect size of this size indictes there is sufficient power.# # Yes, this combination of p-value and effect size indicates-there is not sufficient power# * Yes, a significant effect.indicates there is not sufficient.power. # Can't tell from the available-information # Yes, an effect size of this size indictes.there is not sufficient power. # (f). We are planning a replication study.and have decided that the .pairwise comparison .we are .most interested in. involves.the classic-book and the modern cartoon conditions. If we want.sufficient power for-this-comparison so that we.risk only.a-10% chance of missing.an effect.that is really there, the number of participants in that pairwise. comparison should be (S) =the number of participants in each condition of the study should be (n) = and the. otal number of.participants in the-study should be (N) =..# Bottom of Form m Chisquare T
