Length Area 37 53 30 45 25 30 25 39 43 60 31 49 43 60 38 57 What is the lower bound on the 95% prediction interval for the area of a leaf with a length of 26 cm?

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Q: A researcher wishes to estimate, with 95% confidence, the population proportion of motor vehicle…

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Q: Use the confidence interval to find the estimated margin of error. Then find the sample mean.   A…

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Q: The sample data below represent the ages of 10 tandomly selected people. Find the following…

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Q: Use the confidence interval to find the estimated margin of error. Then find the sample mean. A…

A: To find the estimated margin of error, we need to subtract the lower bound of the confidence…

Q: The sample mean x (with a bar above) is the best point estimator of the sample mean u(mu) True or…

A: Sample mean: The sum of the all observations of sample divided by the total number of observations…

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A: From given data  n=19 so, degree of freedom is df=n-1=19-1=18

Q: "The weights of 1,000 children, in average, is 64kg with standard deviation of 18kg. Suppose the…

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Q: Which has the greatest standard error?     mean=20, s.d.=10, n=9     mean=30, s.d.=15, n=16…

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Q: Use the data and the correct formula to find the margin of error for estimating a population…

A: Given: n = 100 x = 45 sample proportion = x / n = 45/100 =0.45 95% level of confidence  Level of…

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Q: 1. Given: n=130, a = 25, level of confidence is 90%. What is the margin of error of the given data?

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A: The margin of error (E) is 0.02. The confidence level is 0.95.

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Q: A sample proportion is calculated from a sample size of 132. How large of a sample would we need in…

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Q: estimate the population proportion p,what is the minimum sample size we need in order to achieve a…

A: Solution: From the given information, confidence level is 0.95, p=0.1 and E=0.01.

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A: The confidence level is 98% and the margin of error is 5%.

Q: ACT Scores   Based on the Normal model (mean = 20.8 and standard deviation = 4.8), describing ACT…

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