1) Short Answer (6 points) When do we use a one-way ANOVA as opposed to an independent t-test? What are post hoc tests,

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1 Short Answer 6 Points When Do We Use A One Way Anova As Opposed To An Independent T Test What Are Post Hoc Tests 1 (39.9 KiB) Viewed 25 times

1) Short Answer (6 points) When do we use a one-way ANOVA as opposed to an independent t-test? What are post hoc tests, and why do we need to use them after performing a one-way ANOVA? 2) Math Problem (8 points) Rind and Strohmetz (2001) found that waiters who wrote "thank you" or drew a smiley face on the check got bigger tips than those who wrote nothing. To replicate this finding, a researcher asked N = 12 waiters to either draw a smiley face, write "thank you," or write nothing on the check. Then, he measured how many dollars they were given as a tip. • Waiters who wrote "thank you" were given tips of (4, 2, 6, 4) dollars. • Waiters who drew a smiley face were given tips of (9, 3, 6, 6) dollars. • Waiters who did neither of these were given tips of (4, 0, 3, 1) dollars. Was there a significant overall relationship between writing on the check and the amount that waiters were tipped? (Use a = .05. Test the overall effect only; no post hoc tests.)