Bernoulli Trials
Probability
Level
2
We toss a coin 20 times what is the probability of coin landing on heads exactly 15 times.
Give your answer up to 5 decimal places.
You may use a calculator for finishing calculations.
The answer is 0.01478.
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1 solution
there are 20C15 ways to get exactly15 heads out of 20 flips, and there are 2^20 ways to have a flip all in all. P = FAVORABLE WAYS/ TOTAL WAYS