Question

What is the probability of flipping a coin 11 times and getting heads 4 times? Round your answer to the nearest tenth of a percent. O A. 8.1% O B. 22.6% O C. 16.1% ) D. 0.5%

Answer 1

The answer is (A) 8.1%.

Explanation:

The probability of flipping a coin and getting heads is 1/2 or 0.5. Assuming the coin is fair, the probability of getting heads 4 times in 11 flips is given by the binomial probability formula:

P(4 heads in 11 flips) = (11 choose 4) * (0.5)^4 * (0.5)^(11-4) = 330 * 0.5^11

Using a calculator, we get:

P(4 heads in 11 flips) ≈ 8.1%

Therefore, the answer is (A) 8.1%.