PSAT Math Grid-Ins Question 137: Answer and Explanation
Question: 137
| Major at ABC University | ||||
| Gender | Humanities | Math/Science | Engineering | Total |
| Male | 450 | 125 | 140 | 715 |
| Female | 520 | 100 | 155 | 775 |
| Total | 970 | 225 | 295 | 1490 |
What is the probability that a randomly selected student at ABC University will be both a male and a humanities major (calculated to the nearest hundredth)?
Correct Answer: 0.30
Explanation:
(0.30) The probability is given by (number of successes) รท number of chances. The number of successes is the number of female humanities majors, which is 450. The total number of chances is the total number of students in the school, which is 1,490. Therefore, the probability is:
When rounded to the nearest hundredth, we get 0.30.
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