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Bootstrap confidence interval for the median. Your software can generate random numbers that have the uniform distribution on 0 to 1. Figure shows the density curve. Generate a sample of 50 observations from this distribution.
(a) What is the population median? Bootstrap the sample median and describe the bootstrap distribution.
(b) What is the bootstrap standard error? Compute a bootstrap t 95% confidence interval.
(c) Find the BCa or tilting 95% confidence interval. Compare with the interval in (b). Is the bootstrap t interval reliable here?
Kris bought a new fur coat for $8,000. She must pay 5% sales tax and 7% excise tax. The furrier is shipping the coat, so Kris must also pay a $15 insurance charge. What is the total purchase price of the coat
For the new study, the estimate should be within 1% of the population proportion with a 90 percent confidence level. What is the necessary sample size?
a study on students drinking habits asks a random sample of 40 greek ones who belong to a fraternity or sorority uf
A large number of digits are reported for the means and the standard deviations. Do you think that all these digits are necessary? Give reasons for your answer and describe how you would report these results.
After an ANOVA that compares four treatments, you calculate a separate two-sample t 95% confidence interval for each pairwise difference formed from the four population means. Are you 95% confident that these intervals capture all the true differe..
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customers are used to evaluate preliminary product designs. in the past 95 of highly successful products received good
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On a police sergeants exam, the historical mean scored was 80 with a standard deviation of 20. Four offiers scored 195,175,191, and 189 respectively
Also explain which of the three measures of central tendency would be appropriate for your example, which would be inappropriate, and why.
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