11. Little Red Riding Hood carried her grandma's sewing basket which contained 8 balls of cotton: 4 green, 3 red and 1 yellow. Three cotton balls are randomly selected from the basket. Let the discrete random variables G, R and Y be the number of green, red and yellow balls selected respectively. a. Draw up the probability distribution table of R and Y. b. Find E(Y) and E(R) c. Hence, without using the probability distribution of G, find E(G). d. Find Var (R)

11. Little Red Riding Hood carried her grandma's sewing basket which contained 8 balls of cotton: 4 green, 3 red and 1 yellow. Three cotton balls are randomly selected from the basket. Let the discrete random variables G, R and Y be the number of green, red and yellow balls selected respectively. a. Draw up the probability distribution table of R and Y. b. Find E(Y) and E(R) c. Hence, without using the probability distribution of G, find E(G). d. Find Var (R)

Holt Mcdougal Larson Pre-algebra: Student Edition 2012

1st Edition

ISBN:9780547587776

Author:HOLT MCDOUGAL

Publisher:HOLT MCDOUGAL

Chapter11: Data Analysis And Probability

Section11.8: Probabilities Of Disjoint And Overlapping Events

Problem 2C

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