At a telephone enquiry system the number of phone cells regarding relevant enquiry follow Poisson distribution with an average of … phone calls during … minute time intervals. The probability that there is at the most one phone call during a …-minute time period is :

Probability

JEE Main 2006 · Annual, Paper 1 · Q4995

MathematicsEasy75×since 2002Q4995

At a telephone enquiry system the number of phone cells regarding relevant enquiry follow Poisson distribution with an average of

5

phone calls during

10

minute time intervals. The probability that there is at the most one phone call during a

10

-minute time period is :