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Re: Claire estimates her chances of being admitted to her top f [#permalink]
Can someone explain this plz?!
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Re: Claire estimates her chances of being admitted to her top f [#permalink]
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Thank you @GreenlightTestPrep.
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Re: Claire estimates her chances of being admitted to her top f [#permalink]
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Carcass wrote:

This question is part of GREPrepClub - The Questions Vault Project



Claire estimates her chances of being admitted to her top five schools as follows: 80 percent for Debs U, 70 percent for Powderly State, 50 percent for Randolph A&M, 20 percent for Reuther, and 10 percent for Chavez Poly. If Claire’s estimates are correct, her chance of being admitted to at least one of her top five schools is between

A) 75% and 79.99%

B) 80% and 84.99%

C) 85% and 89.99%

D) 90% and 94.99%

E) 95% and 99.99%



We can use the formula:

P(being accepted to at least 1 school) = 1 - P(not being accepted to any schools)

P(not being accepted to any schools) = 0.2 x 0.3 x 0.5 x 0.8 x 0.9 = 0.0216

So the probability of being accepted to at least one school is 1 - 0.0216 = 0.9784.

Answer: E
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Re: Claire estimates her chances of being admitted to her top f [#permalink]
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Re: Claire estimates her chances of being admitted to her top f [#permalink]
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