15. What is the expected value of the probability distribution? Round to two decimal places.

MATLAB: An Introduction with Applications
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need help with problem 15
Use the given the probability distribution to answer questions 13 – 16.
P(x)
0.13
1
0.20
2
3
0.23
4
0.34
13. What probability is need for x = 2 to make it a valid distribution?
14. Find the probability when x is at least 3?
15. What is the expected value of the probability distribution? Round to two decimal
places.
Transcribed Image Text:Use the given the probability distribution to answer questions 13 – 16. P(x) 0.13 1 0.20 2 3 0.23 4 0.34 13. What probability is need for x = 2 to make it a valid distribution? 14. Find the probability when x is at least 3? 15. What is the expected value of the probability distribution? Round to two decimal places.
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