1. Medical researchers followed 6272 Swedish men for 30 years to see if there was any association be- tween the amount of fish in their diet and prostate cancer. ("Fatty Fish Consumption and risk of Prostate Cancer," Lancet, June 2001) No Prostate || Prostate Fish Consumption Never/Seldom Small Part of Diet Moderate Part Cancer Cancer 110 14 2420 201 2769 507 209 Large Part 42 (a) Write appropriate hypotheses (b) Calculate the test statistic Estimate the p-value (d) Conclusion: Choose one: Choose one: (i) p-value < 0.05 (ii) p-value > 0.05 (i) fail to reject Ho (ii) reject Ho Interpret your conclusion in context of the problem.

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12.2.85 Question Help A survey of 1049 adults in a country, asking "As you may know, as part of its effort to investigate terrorism, a federal government agency obtained records from larger telephone and Internet companies in order to compile telephone call logs and Internet communications. Based on what you have heard or read about the program, would you say that you approve or disapprove of this government program?" Of those surveyed, 566 said they disapprove. a. Determine and interpret the sample proportion. b. At the 10% significance level, do the data provide sufficient evidence to conclude that a majority (more than 50%) of adults in the country disapprove of this government surveillance program? Click here to view page 1 of the table of areas under the standard normal curve. Click here to view page 2 of the table of areas under the standard normal curve. a. The sample proportion is (Round to two decimal places as needed.)

For a group of 20 students taking a PSDTF test, the mean heart rate was 96 beats per minute, and the standard deviation was 5. Find the 95% confidence interval of the true mean.