Statisticseasy · Past Paper
In a class of 40 students, 25 are boys. If a student is chosen at random, what is the probability the student is a girl?
A25/40
B15/40
C1/2
D15/25
✓ Correct Answer: B — 15/40
Number of girls = 40 - 25 = 15. Probability = 15/40 = 3/8.
Share this question
More from Statistics
- A bag contains 5 white and 3 black balls. Two balls are drawn one by one with replacement. What is the probability that the first is white and the second is black?
- In a box, there are 10 red, 20 blue and 30 green marbles. 5 marbles are drawn. What is the probability that all are blue?
- A card is drawn from a deck of 52 cards. What is the probability that it is a red face card?
- What is the upper quartile (Q3) position in a dataset of 11 items?
- Find the missing frequency 'p' if the mean of the data (x: 5, 10, 15; f: 2, p, 3) is 10.5.