Instructions: I'm going to go easy on you for this one! We learned a lot about the t-Test for independent samples, and last week you compared estimated speed (in miles) for smashed into group and hit group. This week, I want you to review that assignment and NOW compute the effect size (Cohen's D using the pooled variance). To make sure you have all the data you need to calculate the effect size, here are the means and standard deviationsfor the "hit" and "smashed into" groups from last week.

Group #1: Smashed into mean andSD: Mean = 44.5, Variance = 33.42, SD = 5.78

Group #2: Hit mean andSD:M = 30.7, Variance = 27.17, SD = 5.212

1.Compute the effect size (Cohen'sdusing the pooled variance). Which of the following is the effect size? Round 2 decimal points.

A) Cohen'sd=1.12

B) Cohen'sd=2.50

C) Cohen'sd=2.10

D) Cohen'sd=1.13

2. What does the pooled Cohen'sdyou obtained using the coin study data represent?

A) A small/weak effect

B) A medium/moderate effect

C) No effect

D) A large effect