Qa - poisson distribution

priya (Student) (64 Points)

03 June 2012  

Please help me with these.

A car hire firm has 2 cars which is hired out every day. The number of demands for a car on each day follows Poisson distribution with mean 1.20. What is the proportion of days on which some demand is refused? [ Given e^1.2 = 3.32]
a) 0.25    b) 0.3012   c) 0.12    d) 0.03


The number of accidents in a year is attributed to taxi drivers in a locality follows poisson distribution with an average 2. Out of 500 taxi drivers of that area, what is the number of drivers  with at least 3 accidents in a year?
a) 162    b) 180         c) 201     d) 190