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High Fashion marketing is considering reintroducing paisley ties. In order to avoid a fashion flop, High Fashion interviewed 100 young executives (their primary market) and found that of the 100 interviewed, 79 believed that paisley ties were fashionable and were interested in purchasing one. Using a confidence level of 96 percent, construct a confidence interval for the proportion of all young executives who find paisley ties fashionable.
Is there good evidence that more than thirty percent of the teen girls smoke to stay thin? After conducting the test, your decision and conclusion.
Calculate the range, mean and mean deviations for the Pawnee location and the Chickpee location. (Round mean and mean deviation to 2 decimal places.) - Based on the sample data, which location has fewer lost days?
the manager of sandy corporation wants to determine whether or not the type of work schedule for her employees has any
A book can be classified as either non dash fiction or fiction. Suppose that 97?% of books are classified as fiction.
At 99% confidence, test to determine if there is sufficient evidence to indicate that process 2 takes a significantly longer time to manufacture the Zip drives.
A logistic regression model was used to assess the association between CVD and obesity. P is defined to be the probability that the people have CVD.
Using the 0.10 level of significance, is there evidence that the population mean is above $300?
The probability a student is a sophomore and is not satisfied = round to three decimal places.
Assume that the standard deviation s is known to be $5.50. Using a 0.05 level of significance, would we conclude the typical amount spent per customer is more than $20.00?
Test the null hypothesis of no association, with attention to the natural ordering of the columns. State clearly your alternative hypothesis and choice of test size.
the incidence of a certain disease in the population is estimated to be 1.0 . that is the probability that a randomly
Suppose it is known that a new treatment is successful in curing muscular pain in 75% of the cases. If it is tried on 9 patients, find the probability that fewer than 7 patients are cured.
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