The probability distribution for the random variable x follows: x f(x) 20 0.20 25 0.15 30 0.25 35 0.40 Is the probability distribution valid? Explain. Draw a histogram of the probability distribution. What is the probability that x = 30? What is the probability that x is less than or equal to 25? What is the probability that x is greater than 30?
The probability distribution for the random variable x follows: x f(x) 20 0.20 25 0.15 30 0.25 35 0.40 Is the probability distribution valid? Explain. Draw a histogram of the probability distribution. What is the probability that x = 30? What is the probability that x is less than or equal to 25? What is the probability that x is greater than 30?
College Algebra
7th Edition
ISBN:9781305115545
Author:James Stewart, Lothar Redlin, Saleem Watson
Publisher:James Stewart, Lothar Redlin, Saleem Watson
Chapter9: Counting And Probability
Section9.4: Expected Value
Problem 20E
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Topic Video
Question
- The
probability distribution for the random variable x follows:
x |
f(x) |
20 |
0.20 |
25 |
0.15 |
30 |
0.25 |
35 |
0.40 |
- Is the probability distribution valid? Explain.
- Draw a histogram of the probability distribution.
- What is the probability that x = 30?
- What is the probability that x is less than or equal to 25?
- What is the probability that x is greater than 30?
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