324.midterm02.2005 - STAT-324 Midterm II April 5 2005...

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Algebra and Trigonometry
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Chapter 14 / Exercise 40
Algebra and Trigonometry
Redlin/Stewart
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STAT-324Midterm IIApril 5, 20059:30-10:40AMInstructor: Moo K. ChungAnswer all questions showing all your workneatly.Calculators are allowed. One page note is permittedName:Student ID:Pledge: On my honor, I have neither given nor receivedunauthorized aid on this examination.Signature:QuestionPoints1234Total
We have textbook solutions for you!
The document you are viewing contains questions related to this textbook.
Algebra and Trigonometry
The document you are viewing contains questions related to this textbook.
Chapter 14 / Exercise 40
Algebra and Trigonometry
Redlin/Stewart
Expert Verified
1. A box contains 7 white balls and 3 black balls. A ball is chosen at random and replaced by theopposite color. Now again draw a ball.(a) What is the probability that the second ball drawn is white? [5pts](b) What is the probability that the first ball drawn is black when the second ball drawn iswhite? [5pts]
2. The joint distribution ofXandYis given byf(x, y)=2 fory < x <1,0< y <10 otherwise.(a) Compute the probabilityP(12< X <1,12< Y <1). [5pts](b) Determine the marginal distributions ofXandY. [5pts]

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