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Homework-Ch-05

# Homework-Ch-05 - Chapter 5 Homework[Over 65 points Due Tue...

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1 Chapter 5 Homework Due: Tue Sep 27 [Over 65 points] NAME: ____________________________________ 501. [Ch. 4, 8 p.] (Definitions) a. [2 p.] What is the difference between a “discrete” and a “continuous” variable? b. [2 p.] What is a probability function? c. [2 p.] What is the difference between a discrete and a continuous probability function? d. [2 p.] What do we mean by the “expected value” of a probability function?

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2 503. [Chapter 5; 12 p.] (Discrete Empirical probability) We have an 8- sided die with sides labeled “A” through “H”. After rolling this die a large number of times, we have constructed the following table of relative frequencies: A 0.05 B 0.20 C 0.15 D 0.12 E 0.04 F 0.24 G 0.08 H 0.12 (a) [2 p. ] What is the probability of rolling a “G”? (b) [2 p. ] What is the probability of rolling a “C”? (c) [2p. ] What is the probability of rolling any letter other than “A”? (d) [3 p.] You roll the die 5 times. What is the probability of rolling the exact sequence A-B-C-D-E ? (e) [3 p.] In using the above table of relative frequencies to answer questions about probability, what key assumption did we have to make?
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