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A market researcher wants to evaluate car insurance savings at a competing company. Based on past studies he is assuming that the standard deviation of savings is $100. He wants to collect data such that he can get a margin of error of no more than $10 at a 95% confidence level. How large of a sample should he collect?
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Example Exercise: 5.13 (OpenIntro Statistics), 7.13 (Advanced High School Statistics) | |
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| Education | Upload TimePublished on 3 Jul 2017 |
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