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Dependent and Independent probability
1) A coin is tossed three times. Find the probability of getting at least two heads.
(1/2)
(1/4)
(1/5)
(1/3)
1/10
Solution
Answer:
(1/2)
Explanation:
The set of possible outcomes
= {(H, H, H), (H, T, H), (H, H, T), (T, H, H), (T, H, T), (T, T, H), (H, T, T), (T, T, T)
There are 8 possible outcomes.
The set of favorable outcomes
= {(H, H, T), (H, T, H), (T, H, H), (H, H, H)}
There are 4 favorable outcomes.
Therefore,
P (At least two heads) = (4/8)
= (1/2)
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