Statisticsmedium · Past Paper
What is the probability of getting at least one head when a coin is tossed twice?
A1/4
B1/2
C3/4
D1
✓ Correct Answer: C — 3/4
Outcomes are HH, HT, TH, TT. At least one head includes HH, HT, TH (3 outcomes).
Share this question
More from Statistics
- A box contains 90 discs numbered 1 to 90. If one disc is drawn, what is the probability that it bears a two-digit number?
- If the sum of squares of deviations from the mean is zero, then:
- Which of the following is a measure of central tendency?
- Calculate the median of the following observations: 5, 12, 3, 18, 7.
- Which measure of central tendency can be determined graphically using an Ogive?