Question

When a certain coin is flipped, the probability of obtaining a tails is 0.55. Which of...

When a certain coin is flipped, the probability of obtaining a tails is 0.55. Which of the following is the probability that tails would be obtained exactly 10 times when the coin is flipped 20 times?

1. 0.0473

2. 0.1171

3. 0.1593

4. 0.4086

5. 0.50

0 0
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Answer #1

This is a Binomial distribution with parameters:

n = 20, p = P(Tails) = 0.55

Hence,

P(Exactly 10 tails)

= 0.1593

Option 3 is correct.

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