E(Z) = ~N o² = (Type an integer or a decimal. Do not round.) (Type an integer or a decimal. Do not round.)
E(Z) = ~N o² = (Type an integer or a decimal. Do not round.) (Type an integer or a decimal. Do not round.)
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.5: Comparing Sets Of Data
Problem 14PPS
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Transcribed Image Text:The table below shows the respective probabilities that a number of power failures will strike a certain subdivision in
any given year, with mean E(X) = 1.9 and variance o=0.89. Find the mean and the variance of the random variable
Z=2X+5.
probability
power failures
E(Z) =
o2 =
0.1
0
0.2
1
0.4
2
(Type an integer or a decimal. Do not round.)
(Type an integer or a decimal. Do not round.)
0.3
3
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