Choose 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 of interest. Explain exactly what you did, how you computed your results, and how you would interpret the results.
Answer to relevant QuestionsIn this chapter technical detail were presented for finding a t-multiplier for constructing a confidence interval for a population mean. Use appropriate software, a calculator, or a website to find a confidence interval for ...In Chapter 20, we learned that to compute an approximate 90% confidence interval, the appropriate multiplier is 1.645 instead of 2.0. This works for confidence intervals for one mean or the difference in two means as well. ...The 95% confidence interval for “All Causes” is 1.06 to 1.37. Explain what this interval means in a few sentences that would be understood by some-one with no training in statistics. Make sure your explanation applies to ...Collect data on a measurement variable for which the difference in the means for two conditions or groups is of interest to you. Collect at least 30 observations for each condition or group. Using the data, compute an ...Many researchers decide to reject the null hypothesis as long as the p-value is 0.05 or less. In a testing situation for which a type 2 error is much more serious than a type 1 error, should researchers require a higher or ...
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