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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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1INDE 2333 Engineering Statistics IPractice Exam 2INDE 2333 Engineering StatisticsI–PracticeExam2Instructions: This is an individual effort closed note, closed book, open tableexam. You haveapproximately 80minutesto complete this exam. TheUHAcademic Honesty Policy is in effect.Multiple Choice2 points each–Circle the oneand only onebest answer.Note that if youranswerdue to rounding errorsisveryclose to one of the choices you should select that choice.2.Which of the following encompassesan“claim” involved in a hypotheses test.a.Hob. Hac.Eithera or bd. None of the above11.Receiving a false positive on anengineering job interview drug test means thetesting facility has?a. Committed a type 1 errorb. Committed a type 2 errorc. Made the correct decisiond. None of the above13.Firingan engineer under your supervisionfor failing a drug testmeans somebody.a. Committed a type 1 errorb. Committed a type 2 errorc. Made the correct decisiond.Either a or c14.A statistical test that involves a “beforeand after” focuswith20subjects has howmany degrees of freedom.a.9b.19c. 38d. 3919.An equiprobable approach goodness of fittest with8cells for data that is normallydistributed with atheoreticalgivenmean of 10and a std of 2, would have how many degrees offreedom for the critical value?a. 5b. 6c. 7d. 820.Assuming normalityand independence, if n1or n2 or both are <30 if you cannot reject the Hoin an F test, the next test you are likely to performis a:a. independent t testb. chi-squared testc. Smith-Satterthwaite testd. paired t-test24.Assuming normality, to determine whichcomparison of means test to use, you must firstrun an F test. For this test the Ho: is the variancesare the same. The Ha: is the variances are not thesame. At an alpha level of 0.10 what is yourdecision?a. Cannot reject Hob. Reject Hoc. I need to retake this coursed. Cannot determine from the above information

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Document Details

University
University of Houston
Course
INDE 2333
Subject
Engineering

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