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The probability of hitting a target is .25 Danny makes 3

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CEO
CEO
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The probability of hitting a target is .25 Danny makes 3 [#permalink] New post 25 Dec 2007, 14:05
The probability of hitting a target is .25
Danny makes 3 salvos

p = .25
~p = .75

What is the probability that he scores only 1 hit?


Is the answer
(.25) (.75) (.75) = .25(.75)^2
or
.25(.75)^2 * 3C1
Director
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 [#permalink] New post 25 Dec 2007, 15:05
.25(.75)^2 * 3C1

.25*.75*.75*3 is your answer
CEO
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Joined: 21 Jan 2007
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Location: New York City
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 [#permalink] New post 25 Dec 2007, 17:33
eschn3am wrote:
.25(.75)^2 * 3C1

.25*.75*.75*3 is your answer


thanks. looking over my notes and saw that error...
  [#permalink] 25 Dec 2007, 17:33
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The probability of hitting a target is .25 Danny makes 3

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