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1. On the basis of the confidence interval given in Exercise 8.41, is there convincing evidence that a majority of all marketing researchers disapprove of the actions taken in the conflict of interest scenario? Explain.
2. In an article in CA Magazine, Neil Fitzgerald surveyed Scottish business customers concerning their satisfaction with aspects of their banking relationships. Fitzgerald reports that, in 418 telephone interviews conducted by George Street Research, 67 percent of the respondents gave their banks a high rating for overall satisfaction.
a. Assuming that the sample is randomly selected, calculate a 99 percent confidence interval for the proportion of all Scottish business customers who give their banks a high rating for overall satisfaction.
b. Based on this interval, can we be 99 percent confident that more than 60 percent of all Scottish business customers give their banks a high rating for overall satisfaction?
Text Book: Business Statics in Practice By BOWERMAN.
Interpret the data and note the shape of the distribution of the data provided from the case study: Highest paid women...include frequency table, stem and leaf plot, histogram, sample mean and median, and sample standard deviation.
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Suppose that X and Y have the joint pdf f(x, y) = 8xy; 0
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When using the binomial probability distribution for analyzing guesses on a multiple-choice quiz, what is wrong with letting "p" denote the probability of getting a correct answer while "x" counts the number of wrong answers?
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Construct 90% and 95 % confidence intervals for the population proportion. Interpret the results and compare the widths of the confidence intervals. If convenient, use technology to construct the confidence intervals.
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