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Public Health and Nutrition
In case you missed it, the United Nations declared 2008 as the International Year of the Potato. Seriously, potatoes are a good source of carbohydrates, protein, fiber, and potassium. However, the amount of each element varies depending on where the potato is grown. Independent random samples of medium-sized potatoes from Russia and China were obtained, and the amount of potassium (in mg) was measured in each. The data are summarized in the following table.
Assume normality and equal population variances. Is there any evidence to suggest that the population mean potassium level is different for a medium-sized potato in Russia and China? Use a = 0.05.
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For machine gun ammunition to be acceptable, the US Army requires that 96 percent of rounds fired hit a specified target. The test is to fire a 50 round burst at the target and observe whether this condition is met.
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What score would Sandra need to beat 91 percent of her mathematics class? The mean score was 73, and the standard deviation was 12.
Calculate Statistical Significant Difference of Voting
several years of study by dedicated researchers have shown that on average 4 sharks per month can be found in an area
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