Discussion Questions Sampling Distributions and Confidence Intervals
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Business Statistics, Ch. 7: Sampling and Sampling Distributions
1. Describe the distribution of a sample's mean using the central limit theorem, correcting for a finite population if necessary.
2. Describe the distribution of a sample's proportion using the z formula for sample proportions.
3. Reasons for Sampling
4. Reasons for Taking a Census
Business Statistics, Ch. 8: Statistical Inference: Estimation for Single Populations
5. Estimate the population mean with a known population standard deviation using the z statistic, correcting for a finite population if necessary.
6. Estimate the population mean with an unknown population standard deviation using the t statistic and properties of the t distribution.
7. Estimate a population proportion using the z statistic.
8. Use the chi-square distribution to estimate the population variance given the sample variance.
9. Determine the sample size needed in order to estimate the population mean and population proportion.
