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a researcher was interested in determining whether incentives affect the response rate in surveys a simple random sample of 50 adult residents of a
could mud-wrestling be the cause of a rash contracted by university of washington students in the spring of 1992 two physicians at the university of
1a researcher was interested in determining whether incentives affect the response rate in surveys a simple random sample of 50 adult residents of a
1on november 26 1995 the minneapolis tribune ran an article on gender differences in shopping behavior when 400 women were asked to respond to the
1a company wants to know if minorities are more likely to be in certain job categories than others their data base codes employees 1 for clerical 2
1according to a recent survey 275 of 400 middle-aged americans said they used the internet regularly 140 of 400 senior citizens said they used the
1according to recent reports 30 of americans are now classified as obese a sample of 800 americans found that 278 of them were obese according to the
1an experiment was performed to investigate lifetime of a component exposed to high heat three different oven types were used at either 550degf or
1a scientist examined the effect of temperature and catalyst on the yield of a reaction he ran the experiment at both 150deg and 200degc with two
1an experiment was carried out to assess the effects of four tomato varieties and four planting densities on yield there were 64 plots and each of
1an experiment was conducted to determine the effects of three different pesticides p1p2p3 on the yield of three different varieties of citrus tree
1in many sports there is a debate over the use of high-tech equipment to improve performance a recent study in golf centered on both the use of
1a study of cardiovascular risk factors compared heavy smokers light smokers and nonsmokers both men and women were included in the study so that the
a study of cardiovascular risk factors compared heavy smokers light smokers and nonsmokers both men and women were included in the study so that the
1an experiment tests the effects of new devices to help stop smoking they tested hypnosis nicotine gum nicotine patch and nicotine inhaler they
1i plan an experiment to test the latest conflicting diet programs the factor for diet will involve three different levels low fat low carbohydrate
1an experiment was conducted to examine the yield of six different types of alfalfa they were planted in four different locations so we will consider
1a researcher is interested in comparing sat scores for students enrolled in public schools private schools and those home schooled she selects a