In the following probability distribution, the random variable X represents the number of activities a parent of a 6th-8th grade student is involved in. 1 3 4 P(X) 0.08 0.11 0.238 0.324 0.248 a) Compute and the mean of the random variable X. b) Compute the variance of the random variable X. c) Compute the standard deviation of the random variable X d) What is the probability that a randomly selected student has a parent involved in 1 activities?
In the following probability distribution, the random variable X represents the number of activities a parent of a 6th-8th grade student is involved in. 1 3 4 P(X) 0.08 0.11 0.238 0.324 0.248 a) Compute and the mean of the random variable X. b) Compute the variance of the random variable X. c) Compute the standard deviation of the random variable X d) What is the probability that a randomly selected student has a parent involved in 1 activities?
Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section: Chapter Questions
Problem 8CR
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