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21 March, 13:24

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

exactly 8 heads

a. 0.004

b. 1

c. 0.0625

d. 0.109

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Answers (2)
  1. 21 March, 13:34
    0
    Probability of heads in one flip = 0.5 as the 8 flips are independent the probability is multiplied so Prob (8 heads) = 0.5^8

    That comes out to about 0.004

    Hope you have a great day!
  2. 21 March, 13:51
    0
    So for the first time it will be 1/2

    so, for exactly 8 heads it will be 1/2*1/2*1/2*1/2*1/2*1/2*1/2*1/2 = 0.0039 = 0.004

    so your answer is A (0.004)
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