2
QuizMultiple Choice

Applying Probability Rules — Unit test

Question 2 • PISD-Statistics B 4th GP

For students majoring in Hospitality Management, it was determined that 5% have visited 1–10 states, 16% have visited 11–20 states, 45% have visited 21–30 states, 19% have visited 31–40 states, and 15% have visited 41–50 states. Suppose a Hospitality Management student is randomly picked. What is the probability that the student has visited 30 or fewer states?

Answer
A
0.34
B
0.45
C
0.66
D
1.00

Explanation

“30 or fewer states” includes the groups who visited 1–10, 11–20, and 21–30 states. Add their probabilities: 0.05 + 0.16 + 0.45 = 0.66. Therefore, the probability is 0.66, choice C.

AI-written and checked against the verified answer.

Previous
Next