The length (L) of a rectangle of fixed area varies inversely as the width (W). If the length of a rectangle is 10 ft when the width is 8 ft, find the length
of the rectangle when the width is 5 ft.
Solve for k.

The random variable x is the number of occurrences of an event over an interval of ten minutes. it can be assumed that the probability of an occurrence is the same in any two-time periods of an equal length. it is known that the mean number of occurrences in ten minutes is 5.3. the appropriate probability distribution for the random variable