Write the sine function with the listed attributes. Amplitude: 2/3 period: 3 pi phase shift: -2pi/3 vertical shift: -2

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