2.1 - Probability Distributions (Solutions)

2.1 - Probability Distributions (Solutions) - 0.48 0.16 2.1...

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2.1 – Probability Distributions 1 Section 2.1 Probability Distributions PROBABILITY DISTRIBUTIONS a variable whose value is determined by the outcome of a random experiment. a list of all possible values of a random variable & their associated probabilities RANDOM VARIABLE: PROBABILITY DISTRIBUTION: x 0 1 2 3 4 P(x) 0.08 0.21 0.35 0.23 0.13
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2.1 – Probability Distributions 2 F 0.4 M 0.6 F F M M 1 st Customer 2 nd Customer 0.4 0.6 0.4 0.6 (0.4)(0.4) = 0.16 (0.4)(0.6) = 0.24 (0.6)(0.4) = 0.24 (0.6)(0.6) = 0.36 # of Females out of 2 picks 2 1 1 0 Scenario: Large population that is 40% female and 60% male PROBABILITY DISTRIBUTION Number of Female Customers out of Two x P(x) GRAPH OF PROBABILITY DISTRIBUTION 0 1 2 0.36
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Unformatted text preview: 0.48 0.16 2.1 Probability Distributions 3 MEAN OF A PROBABILITY DISTRIBUTION P(x)) (x 2 2 -P(x)) (x STANDARD DEVIATION OF A PROBABILITY DISTRIBUTION * MEAN is also referred to as the EXPECTED VALUE Number of Female Customers out of Two x 1 2 P(x) 0.36 0.48 0.16 Calculate the mean and standard deviation for the Dr. Millar probability distribution: Mean: P(x)) (x 0.16) (2 0.48) (1 0.36) (0 8 . Standard Deviation: 2 2 -P(x)) (x 2 2 2 2 0.8-0.16) 2 0.48 1 0.36 (0 64 12 1 . . 69 . 0.32 0.48 2.1 Probability Distributions 4 LAB QUESTIONS: Lab 4 # 1, 2, 3 TEXT QUESTIONS: Pg 170 # 5...
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This note was uploaded on 10/04/2011 for the course MATH 1175 taught by Professor Jenny during the Spring '10 term at Fanshawe.

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2.1 - Probability Distributions (Solutions) - 0.48 0.16 2.1...

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