The information below is the number of daily emergency service calls made by the volunteer ambulance service of Walterboro, South Carolina, for the last 50 days. To explain, there were 22 days on which there were 2 emergency calls, and 9 days on which there were 3 emergency calls.

Number of Calls	Frequency
0	8
1	10
2	22
3	9
4	1
Total	50

Click here for the Excel Data File

(a)	Convert this information on the number of calls to a probability distribution.(Round your answers to 2 decimal places.)

Number of Calls	Probability
0
1
2
3
4

(b)	Is this an example of a discrete or continuous probability distribution?
	Continuous Discrete

(c)	What is the mean number of emergency calls per day?(Round your answerto 2 decimal places.)

Mean

(d)	What is the standard deviation of the number of calls made daily?(Round your answer to 3 decimal places.)

Standard deviation