Question

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 0.30

1 0.37

2 0.16

3 0.07

4 0.05

5 0.04

6 0.01

**a.** Compute the mean number of accidents per
day.

**b.** Compute the standard deviation.

Answer #1

0 | 0.3 | 0 | 0 | 0 |

1 | 0.37 | 0.37 | 1 | 0.37 |

2 | 0.16 | 0.32 | 4 | 0.64 |

3 | 0.07 | 0.21 | 9 | 0.63 |

4 | 0.05 | 0.2 | 16 | 0.8 |

5 | 0.04 | 0.2 | 25 | 1 |

6 | 0.01 | 0.06 | 36 | 0.36 |

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 0.30 0.30 1 0.34 0.34 2 0.17 0.17 3 0.08 0.08 4 0.06 0.06 5
0.04 0.04 6 0.01 0.01 b. Compute the standard deviation. sigma σ
equals = nothing (Type an integer or decimal rounded to three
decimal places as needed.)

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
0.260
1
0.340
2
0.180
3
0.090
4
0.060
5
0.040
6
0.030
a. Compute the mean number of accidents per day.
μ=1.59
(Type an integer or a decimal.)
b. Compute the standard deviation.
σ=
(Type an integer or decimal rounded to three decimal places as
needed.)

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...

Suppose that the following table contains the complete
probability distribution for the number of credit cards owned by
adults in a certain country. Complete parts a and b to the
right.
Number_of_Credit_Cards
Probability
0
0.29
1
0.26
2
0.11
3
0.09
4
0.08
5
0.06
6
0.05
7
0.03
8
0.02
9
0.01
a) compute the mean number of credit cards:
b) compute the standard deviation.

Suppose that the following table contains the number of times a
late night comedian is bleeped on his show. Complete parts a and d
to the right.
Number of Bleeps
(x Subscript
ixi)
P(x Subscript
ixi)
0
0.21
1
0.16
2
0.15
3
0.12
4
0.09
5
0.08
6
0.07
7
0.06
8
0.04
9
0.02
a) What is the probability that the host of the
late night show is bleeped more than 3 times?
P(X>3 bleeps) =
(Round to...

The probability distribution of the number of accidents in North
York, Ontario, each day is given by
x
0
1
2
3
4
5
P(x)
0.20
0.15
0.25
0.15
0.20
0.05
a) Based on this distribution, what would be the expected number
of accidents on a given day?
A: 1.81
B: 1.47
C: 2.15
D: 4.62
b) Based on this distribution, what is the approximate value of
the standard deviation of the number of accidents per day?
A: 2.15
B:...

Data indicates that the number of traffic accidents on a rainy
day is Poisson with mean 19, while on a dry day, it is Poisson with
mean 13. Let X denote the number of traffic accidents tomorrow.
Suppose that the chance it rains tomorrow is 0.6. Find(a)P(rain
tomorrow|X= 15) using Bayes rule. (b)E(X).

Consider the probability distribution of the discrete random
vector [X,Y] where X represents the number of orders for chickens
in August at neighboring supermarket and Y represents the number of
orders in September. The Joint distribution is showing the
following table.
Y
51
52
53
54
55
51
0.06
0.05
0.05
0.01
0.01
52
0.07
0.05
0.01
0.01
0.01
53
0.05
0.10
0.10
0.05
0.05
54
0.05
0.02
0.01
0.01
0.03
55
0.05
0.06
0.05
0.01
0.03
Find the probability...

The probability distribution for X, the number of homes with a
dust mite level that exceeds 2μg/g, based on a study by the
National Institute of Environmental Health Sciences, is shown in
the following table:
X
0
1
2
3
4
P(X=x)
0.04
0.35
0.37
0.2
0.04
What is the average number of homes with a dust mite level that
exceeds 2μg/g?
Select one:
a. 1.5
b. 1
c. 1.85
d. 2

A number of minor automobile accidents occur at various
high-risk intersections despite traffic lights. The traffic
department claims that a modification in the type of light will
reduce these accidents. The traffic commissioners have agreed to a
proposed experiment. Eight intersections were chosen at random, and
the lights at those intersections were modified. The numbers of
minor accidents during a six-month period before and after the
modifications were as follows:
Number of Accidents
A
B
C
D
E
F
G...

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