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A 4. What are the expected value and the variance of the probability distribution below? x P(X = x) 6.40 7.27 8.33 OH= 7.86 o2 = 0.73 OH = 6.93 o2 = 0.73 OH= 7.86 2 = 0.85 OH= 6.93 2 = 0.85

A 4. What are the expected value and the variance of the probability distribution below? x P(X = x) 6.40 7.27 8.33 OH= 7.86 o2 = 0.73 OH = 6.93 o2 = 0.73 OH= 7.86 2 = 0.85 OH= 6.93 2 = 0.85

A First Course in Probability (10th Edition)
A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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All changes saved A 4. What are the expected value and the variance of the probability distribution below? x P(X = x) 6.40 7.27 8.33 Oµ = 7.86 o2 = 0.73 O µ = 6.93 o2 = 0.73 O u = 7.86 o2 = 0.85 O u = 6.93 0.85
Transcribed Image Text:All changes saved A 4. What are the expected value and the variance of the probability distribution below? x P(X = x) 6.40 7.27 8.33 Oµ = 7.86 o2 = 0.73 O µ = 6.93 o2 = 0.73 O u = 7.86 o2 = 0.85 O u = 6.93 0.85
O 5. Look at the relative-frequency table below of the probability distribution of the discrete random variable X, with X = "the number of pets in a household." x P(X = x) 0.09 1.29 2.42 3.15 4.05 What is the expected value of pets in a randomly selected household? O µ = 1.27 Op= 1.78 Ou = 1.52 Ομ=2. 12
Transcribed Image Text:O 5. Look at the relative-frequency table below of the probability distribution of the discrete random variable X, with X = "the number of pets in a household." x P(X = x) 0.09 1.29 2.42 3.15 4.05 What is the expected value of pets in a randomly selected household? O µ = 1.27 Op= 1.78 Ou = 1.52 Ομ=2. 12
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