Question

Not Picture Answer please

The information below is the number of daily emergency calls made to the Central Fire Station in downtown Chicago for the last 50 days. To explain, there were 20 days on which there were two hundred emergency calls, and 8 days were there 300 emergency calls.

Number of Calls	Frequency
50	6
100	14
200	20
300	8
400	2
Total	50

a. Convert this information on the number of calls to a probability distribution.
b. Is this an example of a discrete or continuous probability distribution?
c. What is the mean number of emergency calls per days?
d. What is the standard deviation of the number of calls made daily?

Answer 1

Please don't hesitate to give a "thumbs up" in case you're satisfied with the answer

Here' the calculations in the table below:

a. The probability distribution is in the 3rd column: p(x)

b. This is a discrete distribution as the number of calls don't into decimals

c. mean is E(x) = 178 , please refer formula and note at the top of the image

d. Stdev = last column in the image = 90.642