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Section 6.2: Estimating a Population Proportion

  1. State the large-sample margin of error for the sample proportion ˆp in terms of the population proportion p.
  2. State the large-sample confidence interval for the population proportion p
  3. Determine the large-sample confidence interval to use depending on when a pilot estimate of p is known or unknown.
  4. Given a sample size n, sample proportion ˆp, and confidence level c, construct a 100c% confidence interval for the population proportion p.
  5. 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.
  6. 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

  1. Relate a multinomial procedure to a binomial procedure.
  2. State the requirements necessary for the outcome of an procedure to follow a multinomial distribution.
  3. State examples from everyday life that follow a multinomial distribution.
  4. State the definition of a goodness-of-fit test.
  5. Explain, qualitatively, how the χ2 statistic compares the observed outcomes to the expected outcomes in a multinomial procedure.
  6. State the large-sample sampling distribution of the χ2 statistic under the null hypothesis for a multinomial procedure with k categories for the outcomes.
  7. State conditions on the expected frequencies for when the χ2 statistic can be used.
  8. Use Table A–4 to determine critical values for a one-sample χ2 test for goodness-of-fit at significance level α.
  9. Use Minitab to perform a one-sample χ2 test for goodness-of-fit.
  10. Interpret the output of a one-sample χ2 test for goodness-of-fit in terms of a given null and alternative hypotheses.