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What probability is need for x = 2 to make it a valid distribution? Find the probability when x is at least 2? What is the expected value of the probability distribution? Round to two decimal places.

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

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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Question

x	P(x)
0	0.05
1	0.17
2
3	0.21
4	0.12

What probability is need for x = 2 to make it a valid distribution?
Find the probability when x is at least 2?
What is the expected value of the probability distribution? Round to two decimal places.
What is the standard deviation of the probability distribution? Round to four decimal
places

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