TAMU STAT 302 - ex2asp98 (5 pages)

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ex2asp98

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5
School:
Texas A&M University
Course:
Stat 302 - Statistical Methods
Statistical Methods Documents

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STAT302 Secs 507 509 Spring 1998 Exam 2 Form A Instructor Julie Hagen Carroll 1 Don t even open this until you are told to do so 2 Be sure to mark your section number 507 508 or 509 and your test form A B C or D on the scantron 3 Sign your name where indicated on your scantron and write your Tuesday section number and computer number beside it Also you must place your scantron in the correct section stack for next Tuesday 4 There are 20 multiple choice questions on this exam each worth 5 points There is partial credit Please mark your answers clearly on the scantron Multiple marks will be counted wrong 5 You will have 60 minutes to finish this exam 6 If you are caught cheating or helping someone to cheat on this exam you both will receive a grade of zero on the exam You must work alone 7 This exam is worth 100 points and will constitute 25 of your final grade 8 Good luck 1 STAT302 507 509 Exam 2 Form A Spring 1998 D There is a 3 8 chance of making a Type I error E None of the above are appropriate 1 What is the power of the test represented in the graph above A B C D E 0 511 0 05 0 95 0 489 Since H0 is true there is no chance of a Type II error 5 What is the correct conclusion based on the graph above A Reject H0 at the 10 level and conclude that the true proportion is not 0 5 B Reject H0 at the 10 level and conclude that the true proportion is greater than 0 1 C Reject H0 at the 10 level and conclude that the true proportion is greater than 0 7 D Reject H0 at the 10 level and conclude that the true proportion is greater than 0 5 E Reject H0 at the 10 level and conclude that the true proportion is not 0 7 2 Which of the following would change the power of the test A B C D E reducing the significance level reducing the sample size n reducing the chance of a Type II error All of the above Exactly two of the above excluding D 6 Suppose we want to find out whether Aggies GPR s improve throughout their college career Which of the following would be the best method to



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