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Question: A financial analyst is interested in estimating the average amount of a foreign loan by U.S. banks. The analyst believes that the amount of a loan may be different depending on the bank, or, more precisely, on the extent of the bank's involvement in foreign loans. The analyst obtains the following data on the percentage of profits of U.S. banks from loans to Mexico and proposes to use these data in the construction of stratum weights. The strata are the different banks: First Chicago, 33%; Manufacturers Hanover, 27%; Bankers Trust, 21%; Chemical Bank, 19%; Wells Fargo Bank, 19%; Citicorp, 16%; Mellon Bank, 16%; Chase Manhattan, 15%; Morgan Guarantee Trust, 9%.
a. Construct the stratum weights for proportional allocation.
b. Discuss two possible problems with this study.
A Correlation matrix (correlation, coefficients and probability level under the hypothesis rho = 0) for a company's sales force (age, years of service, and current sales) is given below. Comment.
With your start time being random and uniformly distributed in this interval. What is the PDF of the time that you have to wait for the first train to arrive?
six individuals including a and b take seats around a circular table in a completely random fashion. suppose the seats
Solve this: Suppose you know that the sample proportion of people who prefer chocolate over vanilla is p=.71(71%) with a sample size of n=15000. What is the 95% confidence interval for the population proportion in this case? show all your work wit..
Construct a 95% con?dence interval for the difference between the population means and interpret.
Identify the research question and generate the approriate hypothesis. Find the appropriate statistical test, compute the test statistics and draw conclusions.
Thirty years after this research advocates still cite the first study and ignore the second study. What's the moral of this story?
Why was Mao Zedong successful in overcoming the more powerful Nationalist Chinese during the Civil War of 1928-49? What weaknesses of the Nationalists did he exploit? What strengths did the Chinese Communists possess?
Estimate a multiple regression model that answers your research question. Post your response to the following:
The statistical assumptions required to perform a one-way ANOVA to compare the means of these three groups are reasonable based on the data. A partially completed ANOVA table is provided below?
Locate one article presenting research using polynomial regression. Your task now is to critique the appropriateness, utility, alternatives, strengths, and weaknesses of the use of statistics to support the hypotheses of the study.
1. What is the probability that the detergent was produced at the "abc" plant, given that the soap is defective? 2. What is the probability that the detergent was produced at the "xyz" plant, given that the soap is defective?
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