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bmwhype2
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this is a probability question.

when a diver dives, there is a 20% chance of a perfect score. however, if a perfect score is given out, no one else will get a perfect score thereafter. janet is the third diver. what are her chances of receiving a perfect score?

8/10 x 8/10 x 2/10 = 128/1000, therefore 12.8%

my question is why cant we cancel out or simplify the fractions in this problem to make it 4/5x 4/5 x 1/5?



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We can indeed: 4/5 * 4/5 *1/5 =16/125 = 128/1000
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We can indeed: 4/5 * 4/5 *1/5 =16/125 = 128/1000
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bmwhype2
this is a probability question.

when a diver dives, there is a 20% chance of a perfect score. however, if a perfect score is given out, no one else will get a perfect score thereafter. janet is the third diver. what are her chances of receiving a perfect score?

8/10 x 8/10 x 2/10 = 128/1000, therefore 12.8%

my question is why cant we cancel out or simplify the fractions in this problem to make it 4/5x 4/5 x 1/5?
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I am not sure if I get you. You get the same answer either way
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xALIx
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bmwhype2
this is a probability question.

when a diver dives, there is a 20% chance of a perfect score. however, if a perfect score is given out, no one else will get a perfect score thereafter. janet is the third diver. what are her chances of receiving a perfect score?

8/10 x 8/10 x 2/10 = 128/1000, therefore 12.8%
Show more

can someone tell me why we only do one outcome
Perfect, Not, Not

and not 2 outcomes
Perfect, Not, Not
Not, Not, Not

Shouldn't this be 2 outcomes that you add together?

Thanks,
Ali
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h
x-ALI-x
bmwhype2
this is a probability question.

when a diver dives, there is a 20% chance of a perfect score. however, if a perfect score is given out, no one else will get a perfect score thereafter. janet is the third diver. what are her chances of receiving a perfect score?

8/10 x 8/10 x 2/10 = 128/1000, therefore 12.8%

can someone tell me why we only do one outcome
Perfect, Not, Not

and not four outcomes
Perfect, Not, Not
Not, Perfect, Not
Not, Not, Perfect
Not, Not, Not

Thanks,
Ali
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Ali,

here the only outcome is NOT, NOT , PERFECT (in that order) since once the Perfect happens it can't happen again and it says that Janet is the 3rd diver
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kevincan
We can indeed: 4/5 * 4/5 *1/5 =16/125 = 128/1000
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yeaaaaaaaa im a dunce.
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bmwhype2
kevincan
We can indeed: 4/5 * 4/5 *1/5 =16/125 = 128/1000
yeaaaaaaaa im a dunce.
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that was well over a year ago :lol:

u been away bmw?



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