## Question 623:

The following table lists the number of U.S. mainland hurricane strikes (from 1900 to 1996) for various intensities according to the Saffir-Simpson Hurricane Scale.Intensity

Number of Hurricanes

1

57

2

37

3

47

4

15

5

2

Construct a probability distribution of the data.

Find the mean, variance, and standard deviation fo the probability distribution.

Find the probability that a hurricane selected at random for further study has an intensity of at least 4