The following table contains the probability distribution for the number of traffic accidents daily in a small town. Complete parts (a) and (b) to the right.
Number of Accidents Daily (X) 
P(X) 


0 
0.19 

1 
0.28 

2 
0.22 

3 
0.12 

4 
0.09 

5 
0.06 

6 
0.04 
a. Compute the mean number of accidents per day.
μ =1.98 correct
b. Compute the standard deviation.
**** dont know the answer below****
σ =___________
Determine the mean and standard deviation of the variable X in the binomial distribution where n=4 and π =0.80.
Determine the mean.
****** μ = ________
(Type an integer or a decimal.)
Assume a Poisson distribution.
a. If λ =2.5, find P(X = 1). 
b. If λ =8.0, find P(X = 10). 
c. If λ =0.5, find P(X = 2). 
d. If λ =3.7, find P(X = 4). 
find a, b, c, d
***** P(X = 1)equals=_______
(Round to four decimal places as needed.)
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