Casualties arrivae at the accident unit with the mean rate of one every 10 minutes. Suppose that number of arrivals can be modelled by the Poisson distribution.
(a) Determine probability which there are no arrivals in the given half hour period.
(b) The nurse works for the two hour period. Determine probability that there are fewer than 10 casualties during period.
(c) Compute time interval during which there is a 95% probability of there being at least two casualties.