# Week 4 Practice Worksheet - Running head WEEK 4 PRACTICE...

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Running head: WEEK 4 PRACTICE WORKSHEET1Week 4 Practice WorksheetPSY 315December 12th, 2016Dr. Heather Joppich-Lines
WEEK 4 PRACTICE WORKSHEET2University of Phoenix MaterialWeek 4 Practice WorksheetProvide a response to the following questions.1.Two boats, the Prada (Italy) and the Oracle (USA), are competing for a spot in the upcoming America’s Cup race. They race over a part of the course several times. The sample times in minutes for the Prada were as follows: 12.9, 12.5, 11.0, 13.3, 11.2, 11.4, 11.6, 12.3, 14.2, and 11.3. The sample times in minutes for the Oracle were as follows: 14.1, 14.1, 14.2, 17.4, 15.8, 16.7, 16.1, 13.3, 13.4, 13.6, 10.8, and 19.0. For data analysis, the appropriate test is the t test: two-sample assuming unequal variances.The next table shows the results of this independent t test. At the .05 significancelevel, can you conclude that there is a difference in their mean times? Explain these results to a person who knows about the ttest for a single sample but who is unfamiliar with the ttest for independent means.
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