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Propranolol is the beta blocker given to ease pain of patients with episodes of unstable angina. New drug for treatment of this disease is tested on 30 pairs of patients who are matched on one-to-one basis according to age, sex, and clinical condition and are assessed as to severity of their pain. Assume that in 15 pairs of patients, patient with new drug has less pain; and in l0 pairs of patients, patient with propranolol has less pain; and in 5 pairs of patients, pain is about same with two drugs.
Assume normality is not assumed. What nonparameiric test can be used to distinguish total heart weight of males with left-heart disease with that of normal males? Write and Implement test and report a p-value.
Draw a normal probability plot for residuals using excel or Minitab. Do the residuals seem normally distributed? If yes, why?
Suppose that the mean of the annual return for common stocks from 2000 to 2012 was 8.5%, and the standard deviation of the annual return was 25.2%.
23% of college students say that they use credit cards because of the rewards program. you randomly select 10 students who say that they use the credit card because of its rewards program.
A recent article in the Myrtle Beach Sun Times reported that the mean labor cost to repair a colour television is $90 with a standard deviation of $22. Monte's TV Sales and Service completed repairs on two sets this morning. The labor cost for the..
Taking α to be 0.05, what is/are the critical values associated with testing your hypothesis?
As a manager, what are some benefits of applying probability concepts to solve business-related problems? Would business decisions suffer without probability concepts? Explain.
In a survey of 8000 woman, 5431 say they change their nail polish once a week. Construct a 99% confidence interval for the population proportion of woman who change their nail polish once a week. A 99% confidence interval for the population is??
A seed distributor claims that 80% of its beet seeds will germinate. How many seeds must be tested for germination in order to estimate p, the true proportion that will germinate, so that the maximum error of the estimate is " = 0:03 with 90% con ..
A cola dispensing machine is set to depense 9 ounces per cup with a standard deviation of .5 oz .THe manufacturer would like to set the control limits so that for samples of 16,
What is the underlying variable that indirectly correlates these 2 variables? What other variables could you identify as having an indirect relationship?
Emma's On-the-Go, a large convenience store, has to decide where in the store to put its magazine rack. The manager at Emma's experiments with a selection of different locations, choosing a sample of days at each location.
Two events, A and B are equally likely. The chance that either A or B happens on a given trial of an experiment is 0.70, while the chance that they both happen on a given trial is only 0.40.
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