BUSA 2100 Ch 7 Test Questions
with All Correct Answers
A simple random sample of size n from a finite population of size N is a sample selected
such that each possible sample of size _____. - Answer- n has the same probability of
being selected
How many different samples of size 3 (without replacement) can be taken from a finite
population of size 10? - Answer- 120
A simple random sample of size n from a finite population of size N is to be selected.
Each possible sample should have _____. - Answer- the same probability of being
selected
A simple random sample from an infinite population is a sample selected such that
_____. - Answer- each element selected comes from the same population and each
element is selected independently
Random samples of size 81 are taken from an infinite population whose mean and
standard deviation are 200 and 18, respectively. The distribution of the population is
unknown. The mean and the standard error of the distribution of sample means are
_____. - Answer- 200 and 2
Whenever the population has a normal probability distribution, the sampling distribution
of x̄ is a normal probability distribution for _____. - Answer- any sample size
For a population with an unknown distribution, the form of the sampling distribution of
the sample mean is _____. - Answer- approximately normal for large sample sizes
Stratified random sampling is a method of selecting a sample in which _____. - Answer-
the population is first divided into groups, and then random samples are drawn from
each group
Cluster sampling is _____. - Answer- a probability sampling method
Convenience sampling is an example of _____. - Answer- a nonprobability sampling
technique
Which of the following is an example of a nonprobability sampling technique? - Answer-
judgement sampling
with All Correct Answers
A simple random sample of size n from a finite population of size N is a sample selected
such that each possible sample of size _____. - Answer- n has the same probability of
being selected
How many different samples of size 3 (without replacement) can be taken from a finite
population of size 10? - Answer- 120
A simple random sample of size n from a finite population of size N is to be selected.
Each possible sample should have _____. - Answer- the same probability of being
selected
A simple random sample from an infinite population is a sample selected such that
_____. - Answer- each element selected comes from the same population and each
element is selected independently
Random samples of size 81 are taken from an infinite population whose mean and
standard deviation are 200 and 18, respectively. The distribution of the population is
unknown. The mean and the standard error of the distribution of sample means are
_____. - Answer- 200 and 2
Whenever the population has a normal probability distribution, the sampling distribution
of x̄ is a normal probability distribution for _____. - Answer- any sample size
For a population with an unknown distribution, the form of the sampling distribution of
the sample mean is _____. - Answer- approximately normal for large sample sizes
Stratified random sampling is a method of selecting a sample in which _____. - Answer-
the population is first divided into groups, and then random samples are drawn from
each group
Cluster sampling is _____. - Answer- a probability sampling method
Convenience sampling is an example of _____. - Answer- a nonprobability sampling
technique
Which of the following is an example of a nonprobability sampling technique? - Answer-
judgement sampling
