An office has four copying machines, and the random variable X measures how many of them are in use at a particular in time. Suppose that P(X= 0) = 0.08, P(X= 1) = 0.11, P(X= 2) = 0.27, and P(X= 3) = 0.33. Please find the expected number of copying machines in use at a particular moment in time. 1.54 2.14 1.36 2.48
An office has four copying machines, and the random variable X measures how many of them are in use at a particular in time. Suppose that P(X= 0) = 0.08, P(X= 1) = 0.11, P(X= 2) = 0.27, and P(X= 3) = 0.33. Please find the expected number of copying machines in use at a particular moment in time. 1.54 2.14 1.36 2.48
A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
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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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
Transcribed Image Text:An office has four copying machines, and the random variable X measures how many of them are in use at a particular moment
in time.
Suppose that
P(X= 0) = 0.08, P(X= 1) = 0.11, P(X= 2) = 0.27, and P(X= 3) = 0.33.
Please find the expected number of copying machines in use at a particular moment in time.
1.54
2.14
1.36
2.48
Expert Solution
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Step 1
Given that
P(X = 0) = 0.08, P(X = 1) = 0.11, P(X = 2) = 0.27, and P(X = 3) = 0.33.
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