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INDE 2333 Engineering Statistics I Practice Exam 2

A practice exam covering key concepts in engineering statistics.

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    1 INDE 2333 Engineering Statistics I Practice Exam 2 INDE 2333 Engineering Statistics I – Practice Exam 2 Instructions: This is an individual effort closed note, closed book , open table exam. You have approximately 80 minutes to complete this exam. The UH Academic Honesty Policy is in effect. Multiple Choice 2 points each – Circle the one and only one best answer . Note that if your answer due to rounding errors is very close to one of the choices you should select that choice. 2. Which of the following encompasses an “claim ” involved in a hypotheses test. a. Ho b. Ha c. Either a or b d. None of the above 11. Receiving a false positive on an engineering job interview drug test means the testing facility has ? a. Committed a type 1 error b. Committed a type 2 error c. Made the correct decision d. None of the above 13. Fi r ing an engineer under your supervision for failing a drug test means somebody. a. Committed a type 1 error b. Committed a type 2 error c. Made the correct decision d. Either a or c 14. A statistical test that involves a “before and after” focus with 2 0 subjects has how many degrees of freedom. a. 9 b. 19 c . 38 d. 39 19. An equiprobable approach goodness of fit test with 8 cells for data that is normally distributed with a theoretical given mean of 10 and a std of 2, would have how many degrees of freedom for the critical value? a. 5 b. 6 c. 7 d. 8 20. Assuming normality and independence , if n1 or n2 or both are <30 if you cannot reject the Ho in an F test, the next test you are likely to perform is a: a. independent t test b. chi - squared test c. Smith - Satterthwaite test d. paired t - test 24. Assuming normality, t o determine which comparison of means test to use, you must first run an F test. For this test the Ho: is the variances are the same. The Ha: is the variances are not the same. At an alpha level of 0.10 what is your decision? a. Cannot reject Ho b. Reject Ho c. I need to retake this course d. Cannot determine from the above information

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