2. Let X be a random variable with the following probability distribution: -4 1 P(X)| 0.2 0.3 0.4 0.1 Find the expected value and standard deviation.

College Algebra
10th Edition
ISBN:9781337282291
Author:Ron Larson
Publisher:Ron Larson
Chapter8: Sequences, Series,and Probability
Section8.7: Probability
Problem 11ECP: A manufacturer has determined that a machine averages one faulty unit for every 500 it produces....
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2. Let X be a random variable with
the following probability distribution:
-4
1
2
P(X) | 0.2
| 0.3
0.4
0.1
Find the expected value and
standard deviation.
Transcribed Image Text:2. Let X be a random variable with the following probability distribution: -4 1 2 P(X) | 0.2 | 0.3 0.4 0.1 Find the expected value and standard deviation.
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