Automobile accident and asked what they saw. One group of students was asked how fast were they going when they smashed into the car? Other group verb was changed to hit. Smashed into reported higher...

Automobile accident and asked what they saw. One group of students was  asked how fast were they going when they smashed into the car? Other group verb was changed to hit. Smashed into reported higher rates of speed than hit. Suppose a researcher repeats this study with current college students and obtains the following results.

Smashed into                                      Hit

n=15                                                    n=15

M=40.8                                                M=34.0

SS=510                                               SS=414

1. State the hypothesis

2. Do the results indicate a significantly higher estimated speed for the smashed into group? Use a two-tailed test with a=.05.

Compute estimated Cohen's D to measure size of the effect. State numerical value and meaning.