If a coin is tossed five times then what is the probability that you observe at least one head?
(a) 1/32
(b) 15/32
(c) 23/32
(d) 31/32
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If a coin is tossed five times then what is the probability that you observe at least one head?
(a) 1/32
(b) 15/32
(c) 23/32
(d) 31/32
If a coin is tossed five times then what is the probability that you observe at least one head?
(a) 1/32
(b) 15/32
(c) 23/32
(d) 31/32
Correct option d (31/32)
Explanation:
Consider solving this using complement.
Probability of getting no head = P(all tails) = 1/32
P(at least one head) = 1 – P(all tails) = 1 – 1/32 = 31/32.