Consider the following discrete probability distribution. x 15 22 34 40 P(X = x)
ID: 3126098 • Letter: C
Question
Consider the following discrete probability distribution. x 15 22 34 40 P(X = x) 0.14 0.40 0.26 0.20
What is the probability that the random variable X is less than 40? What is the probability that the random variable X is between 10 and 30?
What is the probability that the random variable X is greater than 20?
What is the probability that the random variable X is less than 40? What is the probability that the random variable X is between 10 and 30?
What is the probability that the random variable X is greater than 20?
Explanation / Answer
1) p ( x < 40 ) = 0.14+0.40+0.26 = 0.80
2) p ( 10 < x < 30 ) = 0.14 + 0.40 = 0.54
3 ) p ( x > 20 ) = 0.40+0.26+0.20 = 0.86
x 15 22 34 40 p ( X=x) 0.14 0.40 0.26 0.20