document.write( "Question 924374: Between the hours of 2 and 4pm the average number of phone calls per minute coming into the switch-board of a company is 2.5.Find the probability that during one particular minute there will be A.2 B.3 C.4 phone calls. \n" ); document.write( "
Algebra.Com's Answer #560854 by ewatrrr(24785)\"\" \"About 
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Between the hours of 2 and 4pm, avg/min = 2.5
\n" ); document.write( " Using a TI calculator 0r similarly a Casio fx-115 ES plus
\n" ); document.write( "P(x = 2pmin) = poissonpdf(2.5,2) = .2565
\n" ); document.write( "P(x = 3pmin) = poissonpdf(2.5,3) = .2138
\n" ); document.write( "P(x = 4pmin) = poissonpdf(2.5,4)= .1336
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