Answers to Practice for Midterm 3 - Intro Stats
1. First, we need to gure out on how many of the triah we expect to have 4 heads. Each trial
is Binomial with n = 5.17 = 1/2.!1' = 4. Hence. the probability of getting (cruelly 4 bade is
(3)(1/2)(1/2) = 5/32
Ncwemher 18, 2008
Math 102 / Core 143 OK Exam ll
Put youer all the problansonthenumberedaheet, except Earths-essay (#7), whichgoe
on the back. The blue book is hot your scratch work and will NOT be graded.
l. (15 youth) A regular loosehedron (a welded sol
Introduction to Stathtica: Practice for Test. One
SECTION ONE: Multiple Choice (On the test. there will be 10 multiple choice questions.
such worth 5 points, for a total of 50 points.)
1. For the list: 20,212i0.5.10. 18.104.22.168.20. ~40. nd the approximate
Aprll 8. 2003
Math 102 / Core 143, Section: AX and BX Exam ll
Show all work clearly for partial credit; in particular. write down any dilhcult mmputstions beore
you perform them. An nut-walrme expression is worth more than the numeriml answer without
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UNIT 7 LECTURE: HYPOTHESIS TESTING
Q: is a new procedure better than the current/old/another one?
When We take a sample there will most probath be a dillerence in the olnerved and expected
averages (or some other measuremont). is th
IntMuction to Stathtlca
Practice for Tat One
Show all work clearly. You may one a calculator. You haw 80 minutes.
SECTION ONE: Multiple Choice (5 pointa for each answer: 50 points total)
1. For the list
20,22.214.171.124. -5.10.15,15,20, -40.
circle the answor
SECTION ONE: Multiple Choice (5 points tar each answer: 50 points total)
I. Ontheplanet Dangerboy. CaptalnBananahanishustumhledacmwhntappeautobeas-
aided coin. Let's call the aid: hmdn. tails. and led. Bananahnnds ips the coin 12 clams and
gets 6 feet. As