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The correlation between debts. Given figure shows a strong positive relationship between debt in 2007 and debt in 2006 for 24 countries. Use the bootstrap to perform statistical inference for these data.
(a) Describe the shape and bias of the bootstrap distribution. Do you think that a simple bootstrap inference (t and percentile confidence intervals) is justified? Explain your answer.
(b) Give the BCa and bootstrap percentile 95% confidence intervals for the population correlation. Do they (as expected) agree closely? Do these intervals provide significant evidence at the 5% level that the population correlation is not 0?
STA 141A Fall 2016 Homework. Markov chain: Write a function to generate a sequence of random variables {Xi}ni=1 taking values 0 and 1, following the probability model
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Calculate the probability that no patrol cars pass through the neighborhood during a nightly shift. Based on your answer in part a, do you believe the agency's claim? Explain.
Recorded the time in seconds it took for 8 participants to solve a puzzle. These times appear below. However, when the data was entered into the statistical program, the score that was supposed to be 22.1 was entered as 21.2. You had calculate..
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Use your computer statistical software to generate a frequency distribution and histogram describing this information. Do any of the portfolio values seem to be especially large or small compared to the others?
8. John Lister (for whom Listerine is named) was a British physician who was pioneer in reducing deaths of surgical patients from infections. He suspected that bacteria were involved in transmitting infection, so he tried using carbolic acid as an op..
Match the linear correlation coefficient to the scatter diagram.
Find the test statistic.
Find the equation of the regression line for the given data. What is the predicted value of Y when X = -2? What is the predicted value of Y and find the correlation coefficient between X and Y. Is there a weak or strong, positive or negative corr..
a. Use the multiplication rule to find the probability that your first two digits match those drawn and your last two digits do not match those drawn. That is, find P(MMXX), where M denotes a match and X denotes a digit that does not match the ..
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