Question

The following table contains the probability distribution for the number of traffic accidents daily in a...

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.)

Math   Statistics-And-Probability   
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