N is the abbreviation for: Question 1 options: a) b) c) d) Save Question 2 (10 p

Question

N is the abbreviation for:

Question 1 options:

a)

b)

c)

d)

Save

Question 2 (10 points)

A sociologist wants to study the voting patterns of people in a large city. In order to be sure that she has a good sample, she has to:

Question 2 options:

a)

b)

c)

d)

Save

Question 3 (10 points)

One rule of thumb is that if consent rates are _____, then there is not a concern for self-selection bias.

Question 3 options:

a)

b)

c)

d)

Save

Question 4 (10 points)

From the central limit theorem, it is safe to assume that the sampling distribution of the mean is:

Question 4 options:

a)

b)

c)

d)

Save

Question 5 (10 points)

_____ occurs when not everyone who is asked to participate in a study agrees to do so.

Question 5 options:

a)

b)

c)

d)

Save

Question 6 (10 points)

The notation used for the estimated standard error of the mean is:

Question 6 options:

a)

b)

c)

d)

Save

Question 7 (10 points)

The _____ is the same as the population mean of sample means.

Question 7 options:

a)

b)

c)

d)

Save

Question 8 (10 points)

A sample of 250 American tourists had an average return to the airport of 15 percent and a standard deviation of 4 percent. Calculate the 95 percent confidence interval.

Question 8 options:

a)

b)

c)

d)

Save

Question 9 (10 points)

If a sample value is greater than the population value, there is:

Question 9 options:

a)

b)

c)

d)

Save

Question 10 (10 points)

It is possible to predict how often a certain value will occur only if:

Question 10 options:

a)

b)

c)

d)

a)

population mean.

b)

sample size.

c)

frequency.

d)

sample mean.

Explanation / Answer

Answer:

N is the abbreviation for:

Question 1 options:

a)

population mean.

Answer:

b)

sample size.

c)

frequency.

d)

sample mean.

Save

Question 2 (10 points)

A sociologist wants to study the voting patterns of people in a large city. In order to be sure that she has a good sample, she has to:

Question 2 options:

a)

ensure convenience sampling.

Answer:

b)

ensure random sampling.

c)

be sure that each person in the city has a chance to be included in the sample

d)

be sure that the proportions of differing ethnicities and political affiliations in the sample match those in the population of the city.

Save

Question 3 (10 points)

One rule of thumb is that if consent rates are _____, then there is not a concern for self-selection bias.

Question 3 options:

a)

between 50 percent and 70 percent

Answer:

b)

between 80 percent and 90 percent

c)

above 70 percent

d)

below 50 percent

Save

Question 4 (10 points)

From the central limit theorem, it is safe to assume that the sampling distribution of the mean is:

Question 4 options:

a)

positively skewed.

Answer:

b)

normally shaped.

c)

bimodal.

d)

negatively skewed.

Save

Question 5 (10 points)

_____ occurs when not everyone who is asked to participate in a study agrees to do so.

Question 5 options:

a)

Sampling error

Answer:

b)

Consent rate

c)

Self-selection bias

d)

Informed consent

Save

Question 6 (10 points)

The notation used for the estimated standard error of the mean is:

Question 6 options:

Answer:

a)

sM.

b)

M.

c)

.

d)

s.

Save

Question 7 (10 points)

The _____ is the same as the population mean of sample means.

Question 7 options:

a)

sample mean of a normal distribution

Answer:

b)

mean of the sampling distribution

c)

standard error

d)

sampling distribution

Save

Question 8 (10 points)

A sample of 250 American tourists had an average return to the airport of 15 percent and a standard deviation of 4 percent. Calculate the 95 percent confidence interval.

Question 8 options:

a)

14.55 to 15.45

Answer

b)

14.50 to 15.50

c)

14.22 to 15.78

d)

14.36 to 15.64

Save

Question 9 (10 points)

If a sample value is greater than the population value, there is:

Question 9 options:

a)

"negative" sampling error.

b)

no sampling error as long as the overall distribution is symmetric.

Answer:

c)

"positive" sampling error.

d)

too much sampling error for the distribution to be trusted.

Save

Question 10 (10 points)

It is possible to predict how often a certain value will occur only if:

Question 10 options:

Answer:

a)

the sample is representative.

b)

the shape of the population distribution is normal.

c)

the shape of the sampling distribution is normal.

d)

one has a large enough sample.

a)

population mean.

Answer:

b)

sample size.

c)

frequency.

d)

sample mean.

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