Review of Lecture 1_8_31_2011

Review of Lecture 1_8_31_2011 - 6 What are the “two”...

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Review for lectures covered on August 31 (W), 2011: __________________Men Women Total Promoted 288 36 324 Not Promoted 672 204 876 Total 960 240 1200 __________________Men Women Total Promoted 0.24 0.03 0.27 Not Promoted 0.56 0.17 0.73 Total 0.80 0.20 1.00 1. Joint Probability: P(Women and Promoted), P(Men and Not Promoted), etc. 2. Marginal Probability: P(Men), P(Women), P(Promoted), P(Not Promoted) 3. Conditional Probability: P(Men|Not Promoted), P(Women|Promoted), etc. 4. Are Women and Promoted two independent events? Why and why not? 5. List outcomes when flip a coin 3 times.
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Unformatted text preview: 6. What are the “two” conditions for a valid discrete random variable (or discrete probability distribution)? 7. Which of the following is valid discrete random variable? X 1 2 3 Y-1-2 3 f(x) 0.1 0.3 0.4 f(y) 0.3 0.1 0.6 W 1 2 3 f(w)-0.1 0.3 0.8 f(x)=1/5, x=0, 1, 2, 3, 4 f(y)=1/5, y=0, 1, 2, 3, 4, 5 f(z)=z/6, z=1, 2, 3 f(w)=w/5, w=1, 2, 3 8. Find E(X), Var(X), and s.d.(X) for a discrete random variable X. HW Assignment: Ch. 2 --- #14, 15, 16, 17, 24, 26, 29, and 31...
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This note was uploaded on 09/21/2011 for the course QMSC 3321 taught by Professor Louieren during the Fall '11 term at University of Houston-Victoria.

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Review of Lecture 1_8_31_2011 - 6 What are the “two”...

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