(Answered) Problem 1 let x be the random variable with the following

Statistics

Problem 1: Let X be the random variable with the following probability distribution:

Random variable X	Probability
1	0.15
2	0.10
3	0.05
4	0.30
5	0.15
6	0.05
7	0.20

a. What is the expected value of the probability distribution?

b. What is the variance of the probability distribution?

c. What is the standard deviation of the probability distribution?

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