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Section 6.2: Estimating a Population Proportion
- State the large-sample margin of error for the sample proportion ˆp in terms of the population proportion p.
- State the large-sample confidence interval for the population proportion p
- Determine the large-sample confidence interval to use depending on when a pilot estimate of p is known or unknown.
- Given a sample size n, sample proportion ˆp, and confidence level c, construct a 100c% confidence interval for the population proportion p.
- Given a confidence level c and a desired precision E, determine the sample size necessary to attain that level of precision at that confidence level.
- Explain, qualitatively, how the precision of the sample proportion varies with the confidence level c, sample size n, and population proportion p.
Section 10.2: Multinomial Experiments: Goodness-of-Fit
- Relate a multinomial procedure to a binomial procedure.
- State the requirements necessary for the outcome of an procedure to follow a multinomial distribution.
- State examples from everyday life that follow a multinomial distribution.
- State the definition of a goodness-of-fit test.
- Explain, qualitatively, how the χ2 statistic compares the observed outcomes to the expected outcomes in a multinomial procedure.
- State the large-sample sampling distribution of the χ2 statistic under the null hypothesis for a multinomial procedure with k categories for the outcomes.
- State conditions on the expected frequencies for when the χ2 statistic can be used.
- Use Table A–4 to determine critical values for a one-sample χ2 test for goodness-of-fit at significance level α.
- Use Minitab to perform a one-sample χ2 test for goodness-of-fit.
- Interpret the output of a one-sample χ2 test for goodness-of-fit in terms of a given null and alternative hypotheses.