onfidence Interval - Population Mean - Sample Size We would like to construct a 90% confidence interval estimate of the amount spent by customers for lunch at a major restaurant. What is the minimum sample size needed to estimate this population mean with a margin of error no larger than 1 dollar? Based on past studies the population standard deviation is known with = 6 dollars.     43     59     60     98

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A: Givenconfidence interval = 90%x=2.9s=0.2n=100

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Q: G3 We randomly select 100 fish from a reservoir and measure the length of them. The average length…

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Q: 11.) A study of 92 marathon runners showed that they could run at an average rate of 7.8 mph, with o…

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Q: 7. Hypothesis Testing with the P-Value Method A researcher claims that the mean sodium content of…

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