Statisticshard · Past Paper
What is the probability of getting at most 2 heads when 3 coins are tossed?
A7/8
B1/8
C3/8
D1/2
✓ Correct Answer: A — 7/8
At most 2 heads means anything except 3 heads (HHH). 1 - 1/8 = 7/8.
Share this question
More from Statistics
- What is the mode of: 1, 1, 2, 2, 3, 3, 4, 4?
- The mean of 1, 2, 3, ..., n is given by the formula:
- In a symmetric distribution, the relationship between Q1, Q2, and Q3 is:
- The median of 4, 1, 3, 2, 5 is:
- In a class of 30, 10 students like tea, 15 like coffee and 5 like both. What is the probability that a student chosen at random likes neither?