document.write( "Question 1075147: Please help me solve the following problem.\r
\n" ); document.write( "\n" ); document.write( "At the University of Science and Technology,students arrive at the examination centre to write examinations at an average rate of 3 students per minute. Assuming that the student arrival rate follows an appropriate probability distribution, determine the probability that at most two students arrive in a given minute.
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Algebra.Com's Answer #689855 by rothauserc(4718)\"\" \"About 
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We use the Poisson(P) Probability Distribution
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\n" ); document.write( "The formula for P is
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\n" ); document.write( "P(x;u) = (e^u) * (u^x) / x!, where e = 2.71828
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\n" ); document.write( "To solve the problem we need to calculate
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\n" ); document.write( "P(0;3) + P(1;3) + P(2;3) = 0.05 + 0.15 + 0.22 = 0.42
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