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A large multi-branch bank is affiliated with both Mastercard and Visa credit cards. A random sample of 45 Mastercard clients found that their average month-end credit card balance was R922. For a random sample of 66 Visa card clients, their average month-end credit card balance was found to be R828.
Assume that the population of month-end credit card balances for Mastercard and Visa card clients is normally distributed, with population standard deviations of R294 for Mastercard clients and R336 for Visa card clients respectively. Establish at the 5% level of significance whether there is any significant difference in the average month-end credit card balances between Mastercard and Visa card clients.
in a study of the effectiveness of garlic for lowering cholesterol 17 subjects were treated with garlicin which is
Construct a 99% confidence interval estimate of the population mean amount of paint in a 1-gallon can.
The reader should refer to the examples in each chapter for details on how to implement these in actual practice using JMP. Was the design a CRD?
two researchers wiebe and bortolotti in 2002 examined the color in tail feathers of northern flickers. it sometimes
What are the Gander Mountain manager's null and alternative hypotheses? How should he go about taking samples to gather data for testing the hypotheses?
for the following problems do the followinga draw thenbspscatter plotnbspfor the variables.b compute thenbspcorrelation
What is the probability of there being two or more customers in the system?
A health care professional wishes to estimate the birth weights of infants. How large a sample must she select if she desires to be 90% confident that the true mean is within 6 ounces of the sample mean
Leasing agents from the Triangle Mall Management Corporation have suggested that Sunflowers Apparel considered several locations in some of Triangles newly renovated lifestyle malls that cater to shoppers with higher than mean disposable income.
The study also shows that having more engaged workers leads to increased innovation, productivity and profitability
a research study has stated that the taxes paid by individuals is correlated at a .78 value with the age of the
which of the follow samples will have the smallest value for estimated standard error?n 100 with s2nbsp 100n 25 with
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