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1 In sampling every member of a population is

1. In __________ sampling, every member of a population is given an equal chance of being selected for the sample.

a. population

b. mean

c. normal

d. random

2. The inevitable difference between the mean of a sample and the mean of a population based on chance alone is a

a. random sample.

b. confidence interval.

c. sampling error.

d. probability.

3. A frequency distribution of a random sample of means is a

a. random sample.

b. confidence interval.

c. sampling distribution of means.

d. standard error of the mean.

4. Why does a sampling distribution of means take the shape of the normal curve?

a. Random sample

b. Probability

c. Confidence interval

d. Sampling error

5. Alpha represents the area

a. in the tails of a distribution.

b. toward the center of the distribution.

c. higher than the mean of the distribution.

d. lower than the mean of the distribution.

a. population

b. mean

c. normal

d. random

2. The inevitable difference between the mean of a sample and the mean of a population based on chance alone is a

a. random sample.

b. confidence interval.

c. sampling error.

d. probability.

3. A frequency distribution of a random sample of means is a

a. random sample.

b. confidence interval.

c. sampling distribution of means.

d. standard error of the mean.

4. Why does a sampling distribution of means take the shape of the normal curve?

a. Random sample

b. Probability

c. Confidence interval

d. Sampling error

5. Alpha represents the area

a. in the tails of a distribution.

b. toward the center of the distribution.

c. higher than the mean of the distribution.

d. lower than the mean of the distribution.

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