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Question: The billing department of a national cable service company is conducting a study of how customers pay their monthly cable bills. The cable company accepts payment in one of four ways: in person at a local office, by mail, by credit card, or by electronic funds transfer from a bank account. The cable company randomly sampled 400 customers to determine if there is a relationship between the customer's age and the payment method used. The following sample results were obtained:
Based on the sample data, can the cable company conclude that there is a relationship between the age of the customer and the payment method used? Conduct the appropriate test at the a = 0.01 level of significance.
q1 a researcher claims that the standard deviation of the ages of cats is smaller than that for dogs. a random
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Change the last number from 257 to 61 and recalculate the confidence interval. Using the results, describe the effect of an outlier or extreme value on the confidence interval.
Write the four parts for a two-sided hypothesis test concerning the population mean with a = 0.05.- What assumptions are necessary in order for the test in part (a) to be appropriate?
Use simulation with @RISK to determine the number of rooms that should be reserved to minimize the expected cost to the AMA.
HI6007 Group Assignment. Develop estimated regression equations, first using annual income as the in- dependent variable and then using household size
a manufacturer of disk drives for notebook computers wants a mtbf of at least 50000 hours. recent test results for 15
among coffee drinkers men drink of 3.2 cups per day with a standard deviation of 0.8 cups. assume the number of coffee
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On a given day, the bakers at Mary Custard's found that they had 150 pounds of flour, 500 eggs, 90 pounds of sugar, and 120 pounds of fruit mixture with which to make pies. a. Formulate and solve a linear program that will give the optimal producti..
Make sure your answers are as complete as possible and show your work/argument. In particular, when there are calculations involved, you should show how you come up with your answers with critical work and/or necessary steps.
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