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anonymous

  • one year ago

There are 8 mangoes in a bag.the chance of a rotten mango being packed is 0.05.if 4 bags are chosen at random ,find the probability that all the bags do not contain any rotten mango.

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  1. anonymous
    • one year ago
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    The answer is 0.01283...but I do not know how to solve it!!!!

  2. marigirl
    • one year ago
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    @saseal

  3. anonymous
    • one year ago
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    you sure its 0.01283?

  4. marigirl
    • one year ago
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    what method would you use to go about this question?

  5. anonymous
    • one year ago
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    idk im not very good in probability yet

  6. marigirl
    • one year ago
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    @UsukiDoll

  7. UsukiDoll
    • one year ago
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    I don't do stats.

  8. kropot72
    • one year ago
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    The probability of one randomly selected bag having no rotten mango is given by \[\large (1-0.05)^{8}=0.6634\] The probability of 4 randomly selected bags having no rotten mango is therefore: \[\large 0.6634^{4}=0.1937\]

  9. anonymous
    • one year ago
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    ikr thats why i asked him if hes sure about the answer

  10. anonymous
    • one year ago
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    Finally I managed to solve the q....the working was 4c0 multiply with 0.6634 to the power of 0 and multiply with 1- 0.6634to the power of 4 .....anyway tq guys

  11. kropot72
    • one year ago
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    @Babypanda "Finally I managed to solve the q....the working was 4c0 multiply with 0.6634 to the power of 0 and multiply with 1- 0.6634to the power of 4 ....." 0.6634 is the probability that one randomly selected bag has no rotten mango. But you have used (1 - 0.6634), which is the probability that one randomly selected bag has one or more rotten mango. Therefore your working finds the probability that all four randomly chosen bags have one or more rotten mango. However the question asks for the probability that all the bags do not contain any rotten mango. So the result that you have obtained is not what the question asked for.

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