A valid repeated measures ANOVA (rANOVA) was conducted to st…
A valid repeated measures ANOVA (rANOVA) was conducted to study the relative effectiveness of four vitamin supplements in boosting memory in adults over the age of 70. Fifteen such adults were selected and assigned to use each of the four vitamin supplements for a fixed period of time. At the end of each period, each participant was given a memory test. SPSS was used to conduct a repeated measures ANOVA to analyze the memory test scores, and a portion of the SPSS output is provided in the following tables. Refer to the tables as needed to complete this problem. Table 4A Table 4B Table 4C Do the following: Discuss the result of Mauchly’s Test of Sphericity and the implication for the repeated measures ANOVA. P = Condition of sphericity satisfied Use test State the null and alternative hypotheses for the repeated measures ANOVA test, make a decision about the null hypothesis, and write a conclusion statement. : The means are equal for groups. : The means are different for groups. State the result of the repeated measures ANOVA test. P = the null hypothesis Is post hoc analysis appropriate?