5. A single number used to estimate a population parameter is a. the confidence
ID: 3268675 • Letter: 5
Question
5. A single number used to estimate a population parameter is
a. the confidence interval. c. the population parameter.
b. a point estimate. d. the mean of the population.
6. The size of the standard error is affected by the standard deviation of the sample and
a. a confidence interval. c. the population parameter.
b. the point estimate. d. the sample size.
7. Suppose we select 100 samples from a population. for each sample we construct a 95 percent confidence interval. We could expect about 95 percent of these confidence intervals to contain
a. a sample mean. c. the population mean.
b. a point estimate. d. the standard deviation of the population
8. The t distribution is a continuous distribution, with many similarities to
a. the confidence interval. c. the population parameter.
b. the standard normal deviation. D. the mean of the population.
9. The t distribution is used when the population is normal, the sample is les than 30, and
the population standard deviation is unknown.
The population standard deviation is known.
The point estimate is known.
The mean of the population is unknown.
10. The fraction, ratio, or percent indicating the part of the sample of the population having a particular trait of interest is
a. sample mean. b. sampling error. c. z value. d. population mean.
Explanation / Answer
5) b. a point estimate.
6) d. the sample size.
7) c. the population mean.
8) b. the standard normal deviation.
9)the population standard deviation is unknown
10)
a. sample mean
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