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You work in the leasing office of GE capital and wish to predict the average mileage driven of your leased cars within a margin of error of 100 miles (you need this for your company's financial disclosures). Suppose your average customer drives 10,000 miles a year, and your guess for the standard deviation is about 500 miles. How big of a sample size do you need to generate a 95% confidence interval with a mean of 10,000 miles a year with a margin of error of 100 miles.
question assume that breast cancer affects .8 percent of the female population between 40 and 50 years of age. there
A market research field worker needs to interview married couples about use of a certain product.- Are you surprised by the numerical answer you obtained?
Find the population standard deviation using the formula containing the mean (the original formula).
A sample of 50 bottles is selected periodically, and the filling line is stopped if there is evidence that the mean amount dispensed is different from 8 ounces.
your company produces two products model alpha and model beta. these products have profits or contributions of 120 and
Based on the information provided, you are to complete the appropriate 2014 individual tax form and any supporting schedules/forms for the Grants.
Scores on exam-2 are normally distributed with a mean of 66 and standard deviation 1.5 a) What is the probability that a student selected at random has a score below 60 on this exam?
What is the expected value of perfect information about the success or failure of the merger in problem?
State the null hypothesis and alternative hypothesis. Indicate the type of test to be performed (left-tailed, right-tailed, or two tailed). Provide a statement in terms of the hypothesis testing process in this problem that would signify a Type I ..
The so-called "Gambler's Fallacy" makes the mistake of not recognizing:
What percentage of the checkout times was at least 4 minutes? Calculate the mean of this frequency distribution. Calculate the standard deviation of this frequency distribution
The following table contains t0 new sub- oups of thickness data. Plot this data on the control charts from (a) based on the new subgroup size. Is the process in statistical control?
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