8
QuizMultiple Choice

Binomial Probability

Question 8 • College Prep Math B - IC26

A coin is flipped 8 times. Find the probability of the event:exactly 6 heads

Answer
A
0.4375
B
0.75
C
0.0039
D
0.109

Explanation

For exactly 6 heads in 8 flips, choose which 6 flips are heads: there are C(8, 6) = 28 such outcomes. There are 2^8 = 256 equally likely outcomes in total, so the probability is 28/256 = 0.109375, which rounds to 0.109. The correct choice is 0.109.

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