EXPERIMENT 1: Forty participants were given a list of 20 object words to process. The 40 participants were randomly assigned to one of two treatment conditions. Half were instructed to respond "yes" if each object word had more than one vowel in it (shallow processing), and "no" if it did not. The other half were instructed to respond "yes" if the object is normally found in a bathroom (deep processing), and no if it usually is not. After a five-minute distractor task, all subjects were given a surprise free recall task. The number of words correctly recalled was recorded for each subject. Vowel group: M = 12.1, SS = 32.5, n=20 Bathroom group: M = 14.9, SS = 26.5, n=20 We will use = .05

Answer questions 1-8

Question 1: What are the null and alternative hypotheses, respectively? Write out using appropriate statistical notation. Question 2: What are the degrees of freedom for this experiment?

Question 3: Given the df above, what is the critical value. (Use the table at the end of your book.) Question 4: What is the pooled variance (s2p)?? Question 5: What is the standard error for the t statistic? ___________________ _______ Question 6: What is the value of the t-statistic? Question 7: Should the null hypothesis be rejected? Explain. Question 8: (Choose one of the following) a) Counting vowels results in better recall than determining object purpose. b) Determining object purpose results in better recall than counting vowels. c) There is no difference between counting vowels or determining object purpose on number of words recalled.