IDS 301 Final Review Part 2 - Answers - Spring 2008

IDS 301 Final Review Part 2 - Answers - Spring 2008 - IDS...

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Unformatted text preview: IDS 301 Part 2 Chapters 10 through 14 Alpha is .05 if not stated in the problem. 1. The following information was gathered about accounting and engineering graduates GPAs at SDSU. Accounting Engineering 95 . 15 . 3 38 1 1 1 = = = x n 85 . 98 . 2 41 2 2 2 = = = x n What is the point estimator? .17 Construct a 90% confidence interval for the difference between GPAs of the two majors. 41 85 . 38 95 . 645 . 1 98 . 2 15 . 3 2 2 + - = 3346 . 17 . = -.1646 to .5046 2. The following information was given about present graduates with the following degrees: Accounting Engineering 800 , 7 $ 850 , 39 $ 57 1 1 1 = = = x n 100 , 5 $ 300 , 41 $ 41 2 2 2 = = = x n You would like to see if there is a difference between the starting salaries of these two majors. State the null and alternative hypothesis. What is the value of the test statistic? What is the p- value of the test statistic? What conclusion will you draw?...
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This note was uploaded on 06/18/2008 for the course IDS 301 taught by Professor Shaul during the Spring '08 term at San Diego State.

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IDS 301 Final Review Part 2 - Answers - Spring 2008 - IDS...

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