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A report states that 57% of home owners had a vegetable garden. How large a sample is needed to estimate the true proportion of home owners who have vegetable gardens to within 3% with 95% confidence?
Statistics and Probability, Statistics
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Folgers has specified that the average amount of coffee that goes into one of their small coffee cans is not to exceed 13.24 ounces. A quality control inspector for Folgers takes a random sample of 16 cans and found the ...
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A researcher working at a particular company wants to know if workers' health would improve if they were given extra days 'off. In this company, all workers undergo a standard physical exam twice a year and after each ex ...
It has been argued that although there may be more claims when road conditions are slippery in the winter, this should not affect the average claim. Malpeque took a sample of 50 claims from the winter of 2018 and found t ...
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