document.write( "Question 783342: Calls arrive at a petrol station at the rate of 7 cars per minute. What is the probability that the petrol station receives at most 3 cars minute \n" ); document.write( "
Algebra.Com's Answer #476737 by oscargut(2103)\"\" \"About 
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Let X a Poisson random variable with mean 7\r
\n" ); document.write( "\n" ); document.write( "P(X<=3)= 0.082\r
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