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stat_Sp_05_Ex_2a

# stat_Sp_05_Ex_2a - Name Student ID Exam#2 Form A Statistics...

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Name: Student ID: Exam #2 Form A - Statistics 211 Section 505 (Spring 2005) This test consists of six numbered pages. Make sure you have all 6 pages. It is your responsi- bility to inform me if a page is missing!!! You have 70 minutes to complete this test. Make sure you fill out and “bubble in” the following items on the scantron sheet: – Last Name, First Name, MI. – Dept (STAT), Course No (211), Section (505). – Social Security Number (enter your Student ID). – Test Form (A or B). – Enter the exam number, sign and date the form. You will loose credit if you fail to fill out your scantron form correctly. You may use the 6 page crib sheet #2 from the web site, all appropriate tables and a calculator. If I provide partial results—assume they are correct and use them even if they are not. If there is no correct answer or if multiple answers are correct, select the best answer. There is no penalty to wrong answers . . . so guess if you do not know an answer. It is your responsibility to look at the overhead or blackboard about every 15 minutes and to incorporate any relevant information into your test. 1

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Chapter 4 [1] Suppose X N ( μ = 50 , σ 2 = 20 2 ) and P ( X < c - 50) = 0 . 5, then c is a) 100 b) 1 . 96 c) 60 d) 50 e) 50 + 1 . 96 × 20 [2] Suppose X has the following pdf . f ( x ) = k x for 1 < x < 2 . Then k is
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