PLEASE HELP
Probability Distributions for Discrete Random Variables
Consider the discrete random variable, X = customer satisfaction, shown:
X 1 2 3 4 5
P(x) 0.1 0.2 ? 0.3 0.2
a. What is P(×=3)?
b. What is P(x < 3)?
c. What is P(2<_ X < 5) ?
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