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1 - A population of...

1 - A population of size 320 has a proportion equal to .60 for the characteristic of interest. What are the mean and the standard deviation, respectively, of the sample proportion for samples of size 12?

a. .60 and .02

b. .60 and .14

c. 320 and .02

d. 192 and 452 - Suppose the salaries of university professors are approximately normally distributed with a mean of $65,000 and a standard deviation of $7,000. If a random sample of size 25 is taken and the mean is calculated, what is the probability that the mean value will be between $62,500 and $64,000?

a. .0371

b. .0827

c. .1465

d. .20053 - The sampling distribution describes the

a. long-run behavior of a statistic.

b. population proportion.

c. short-term behavior of the population.

d. sample size.4 - A sample chosen by stratified random sampling involves

a. selecting a simple random sample from each of a given number of strata formed from the elements in the population.

b. selecting a simple random sample of clusters from the available clusters in the population.

c. a sample chosen by a knowledgeable person on the subject of the study.

d. randomly selecting one of the first k elements in an ordered population and then selecting every kth element in the population thereafter.5 - A simple random sample of eight high school students' ACT scores gave the following data:What is a point estimate for μ, the mean test score for the population?a. A point estimate cannot be computed since the data for the whole population are not available.

b. 4.84

c. 235

d. 29.386 - A wildlife management organization is interested in estimating the number of moose in a particular region. Organization employees divide the region into 10 sections and randomly select four sections to survey the number of moose present. What sampling method is being used?

a. Stratified random sampling

b. Cluster sampling

c. Systematic sampling

d. Judgment sampling

a. .60 and .02

b. .60 and .14

c. 320 and .02

d. 192 and 452 - Suppose the salaries of university professors are approximately normally distributed with a mean of $65,000 and a standard deviation of $7,000. If a random sample of size 25 is taken and the mean is calculated, what is the probability that the mean value will be between $62,500 and $64,000?

a. .0371

b. .0827

c. .1465

d. .20053 - The sampling distribution describes the

a. long-run behavior of a statistic.

b. population proportion.

c. short-term behavior of the population.

d. sample size.4 - A sample chosen by stratified random sampling involves

a. selecting a simple random sample from each of a given number of strata formed from the elements in the population.

b. selecting a simple random sample of clusters from the available clusters in the population.

c. a sample chosen by a knowledgeable person on the subject of the study.

d. randomly selecting one of the first k elements in an ordered population and then selecting every kth element in the population thereafter.5 - A simple random sample of eight high school students' ACT scores gave the following data:What is a point estimate for μ, the mean test score for the population?a. A point estimate cannot be computed since the data for the whole population are not available.

b. 4.84

c. 235

d. 29.386 - A wildlife management organization is interested in estimating the number of moose in a particular region. Organization employees divide the region into 10 sections and randomly select four sections to survey the number of moose present. What sampling method is being used?

a. Stratified random sampling

b. Cluster sampling

c. Systematic sampling

d. Judgment sampling

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