A fair coin is tossed twice. How many outcomes are in the sample space?
AFour outcomes
BTwo outcomes
CThree outcomes
DEight outcomes
Answer & Solution
Correct answer: A. Four outcomes
1. Each toss can land two ways, heads or tails.
2. The second toss doubles each of those, giving two times two.
3. That is four outcomes: HH, HT, TH and TT.
4. HT and TH are counted separately because the order of the two tosses differs.
_Source: OpenStax High School Statistics (CC BY 4.0), Ch 2 "Descriptive Statistics" and Ch 3 "Probability Topics", section 3.1 Terminology_
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