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A discrete random variable x can assume five possible
Chapter 4, Problem 11E(choose chapter or problem)
Problem 11E
A discrete random variable x can assume five possible values: 20, 21, 22, 23, and 24. The following Minitab histogram shows the likelihood of each value.
a. What is p(22)?
b. What is the probability that x equals 20 or 24?
c. What is P(x ≤ 23)?
Questions & Answers
QUESTION:
Problem 11E
A discrete random variable x can assume five possible values: 20, 21, 22, 23, and 24. The following Minitab histogram shows the likelihood of each value.
a. What is p(22)?
b. What is the probability that x equals 20 or 24?
c. What is P(x ≤ 23)?
ANSWER:
Step 1 of 3
(a)
Find p(22) .
The random variable x takes the values as given below:
20, 21, 22, 23, 24
From the MINITAB histogram, the respective probabilities are given below:
p(20) = 0.15
p(21) = 0.10
p(22) = 0.25
p(23) = 0.30
p(24) = 0.20
Thus, p(22) =