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jesusfreak

  • 4 years ago

Krissy has 3 arrows. The probability of her hitting the target is 2/5. What is the probability that she will get at least one arrow on the target?

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  1. mathmate
    • 4 years ago
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    At least one means she does not miss all, which is easier to calculate. Probability of missing all three is P(0)=(3/5)^3 so P(1+)=1-P(0)

  2. jesusfreak
    • 4 years ago
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    What would the answer be in percent?

  3. mathmate
    • 4 years ago
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    P(0)=(3/5)^3= 0.216 so P(1+)=1-P(0)=0.784

  4. jesusfreak
    • 4 years ago
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    Thank you!

  5. mathmate
    • 4 years ago
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    You're welcome!

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