In a random experiment, a symmetrical coin is thrown 4 times. find the probability that heads will come up at least once?
| February 3, 2021 | education
The probabilities of falling heads and tails are p = 0.5.
Then the probability that heads will not fall out even once with four throws:
P (0) = (1 – 0.5) ^ 4 = 0.5 ^ 4 = 0.0625.
The probability of an opposite event such that heads will land at least once:
P = 1 – P (0) = 1 – 0.0625 = 0.9375.
Answer: 0.9375.
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