7/13/2020 Practice Test 2
21. The data given below show the number of overtime hours worked in one week per employee. Use the data to complete
parts (a) and (b).
Overtime hours
0
1
2
3
4
5
6
Employees
7
11 25 52 46 27 18
(a) Construct a probability distribution.
(b) Graph the probability distribution using a histogram and describe its shape.
(a) Construct the probability distribution by completing the table below.
3
5
6
2
0
х
1
P(x)
(Round to three decimal places as needed.)
(b) Choose the correct graph of the probability distribution.
OD.
OA.
OB.
0.4-
0.4-
0.4-
0.3-
0.2-
0.4
0.3-
0.2-
0.3-
Probability
0.3-
0.2-
Probability
Probability
0.2-
0.1-
0.1-
0.1-+
0.1-
0
0-
0
0-
0 1 2 3 4 5 6
Overtime Hours
0 1 2 3 4 5 6
Overtime Hours
0 1 2 3 4 5 6
Overtime Hours
0 1 2 3 4 5 6
Overtime Hours
Describe the distribution's shape. Choose the correct answer below.
skewed left
uniform
approximately symmetric (but not uniform)
skewed right