Collect data and construct a confidence interval for a proportion for which you already know the answer. Use a sample of at least 100. You can select the situation for which you would like to do this. For example, you could flip a coin 100 times and construct a confidence interval for the proportion of heads, knowing that the true proportion is .5. Report how you collected the data and the results you found. Explain the meaning of your confidence interval, and compare it to what you know to be the truth about the proportion of interest.
Answer to relevant QuestionsChoose a categorical variable for which you would like to estimate the true proportion that fall into a certain category. Conduct an experiment or a survey that allows you to find a 95% confidence interval for the proportion ...Parts (a) through (d) below provide additional results for Case Study 21.1. For each of the parts, compute an approximate 95% confidence interval for the difference in mean symptom scores between the placebo and ...Refer to Original Source 9 on the companion website, “Suicide Rates in Clinical Trials of SS-RIs, Other Antidepressants, and Placebo: Analysis of FDA Reports.” Table 1 in that paper (page 791) provides confidence ...Find a journal article that reports at least one 95% confidence interval. Explain what the study was trying to accomplish. Give the results as reported in the article in terms of 95% confidence intervals. Interpret the ...In Case Study 1.2 and in Chapters 12 and 13, we examined a study showing that there appears to be a relationship between taking aspirin and incidence of heart attack. The null hypothesis in that study would be that there is ...
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