document.write( "Question 1160867: the proportion of adults 25 and older in a certain country with at least a bachelor's degree is 0.25. suppose you pick seven adults at random. what is the probability that exactly three will have a bachelor's degree or higher? \n" ); document.write( "

Algebra.Com's Answer #784272 by ikleyn(52781) $\"\"$ $\"About$

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document.write( "Use the Binomial Probability formula\r\n" );
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document.write( "    Probability (P) (k successes in n trials) = nCk * p^k * (1-p)^(n-k), where nCk = n! / (k! * (n-k)!)\r\n" );
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document.write( "For this problem, n = 7, k = 3, p = 0.25.\r\n" );
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document.write( "    P(exactly three will have a bachelor's degree or higher) =  =  = 0.1730 = 17.3%.    ANSWER\r\n" );
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