A one-sided claim about a population proportion is a claim that the proportion is less than (or greater than) some specific value. Such a claim can be formally addressed using a one-sided confidence interval for p, which can be expressed as p < p + E or p > p E, where the margin of error E is modified by replacing za>2 with za. (Instead of dividing a between two tails of the standard normal distribution, put all of it in one tail.) Repeat part (c) of Example 3 by constructing an appropriate one-sided 95% confidence interval.
Answer to relevant QuestionsRefer to the accompanying screen display. a. Express the confidence interval in the format that uses the “less than” symbol. b. Identify the best point estimate of m and the margin of error. Listed below are the amounts of mercury (in parts per million, or ppm) found in tuna sushi sampled at different stores in New York City. The study was sponsored by the New York Times, and the stores (in order) are D’ ...Listed below are the gross amounts (in millions of dollars) earned from box office receipts for the movie Harry Potter and the Half-Blood Prince. The movie opened on a Wednesday, and the amounts are listed in order for the ...The Wechsler IQ test is designed so that the mean is 100 and the standard deviation is 15 for the population of normal adults. Find the sample size necessary to estimate the mean IQ score of professional pilots. We want to ...Figure from Example 5 shows a graph of three different confidence intervals. Use the continue levels of smokers listed in Data Set 9 from Appendix B and construct the 95% confidence interval estimate of the population mean ...
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