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Math Help - Probability Distributions

  1. #1
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    Probability Distributions

    A coin is tossed 8 times. Calculate the probability of ;

    a) tossing 6 heads and 2 tails.
    b) tossing 7 heads and 1 tail
    c) tossing at least 6 heads
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  2. #2
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    Drawing a Tree diagram will help you visualise and solve problem a and b fairly easily. but for problem c you have to use binomial distribution 1 - P( x < 6 ). Hope it helps.
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  3. #3
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    Could you go into greater detail please?
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  4. #4
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    I guess drawing a tree diagram with 8 stages might be a little too complicated but it will greatly help to analyse and solve the problem at hand.

    Anyway for problem a the probability of obtaining a head or a tail is half. Therefore the answer to part a is (0.5)^6 x (0.5)^2 hope you will be able to do part b and c.
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