Part 1 of 9 - 1.0/ 1.0 Points
Question 1 of 25 1.0/ 1.0 Points
Which of the following correctly describes the relationship between a sample and a population?
A.A population and a sample are not related.
B.A populatio
...
Part 1 of 9 - 1.0/ 1.0 Points
Question 1 of 25 1.0/ 1.0 Points
Which of the following correctly describes the relationship between a sample and a population?
A.A population and a sample are not related.
B.A population is a group of samples that may or may not be included in a study
C.A sample is a group of subjects selected from a population to be studied.
D.A sample is a group of populations that are subject to observation.
Answer Key: C
Part 2 of 9 - 2.0/ 2.0 Points
Question 2 of 25 1.0/ 1.0 Points
A gumball machine contains 300 grape flavored balls, 400 cherry flavored balls, and 500 lemon
flavored balls. What is the probability of getting 1 grape ball, 1 cherry ball, and 1 lemon ball if
each ball was removed and then replaced before choosing the next from the machine?
A.0.0264
B.0.0531
C.0.0347
D.0.0482
Answer Key: C
Question 3 of 25 1.0/ 1.0 Points
A furniture manufacturer offers bookcases in 5 different sizes and 3 different colors. If every
color is available in every size, then the total number of different bookcases is
A.5
B.8
C.15
D.30
Answer Key: C
Part 3 of 9 - 3.0/ 3.0 Points
Question 4 of 25 1.0/ 1.0 Points
Find the variance of the following probability distribution.
X P(X)
1 0.10
2 0.35
3 0.10
4 0.15
5 0.30
A.1.44
B.2.06
C.1.76
D.1.2
Answer Key: B
Question 5 of 25 1.0/ 1.0 Points
Find the variance of the following probability distribution.
X P(X)
1 0.20
2 0.35
3 0.10
4 0.25
5 0.10
A.1.83
B.1.31
C.1.25
D.1.71
Answer Key: D
Question 6 of 25 1.0/ 1.0 Points
In a small town, 60% of the households have dogs. If 5 households are randomly selected, what
is the probability that at least 4 of them have dogs?
A.0.337
B.0.8
C.3
D.0.259
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