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Anorexia. Hearing anecdotal reports that some patients undergoing treatment for the eating disorder anorexia seemed to be responding positively to the antidepressant Prozac, medical researchers conducted an experiment to investigate. They found 93 women being treated for anorexia who volunteered to participate.
For one year, 49 randomly selected patients were treated with Prozac and the other 44 were given an inert substance called a placebo. At the end of the year, patients were diagnosed as healthy or relapsed, as summarized in the table:
Do these results provide evidence that Prozac might be helpful in treating anorexia? Explain.
The following table shows the payroll for 10 major league baseball teams (in millions) for the 2002 season, along with the number of wins for that year.
When the test of hypothesis with a fixed level of significance (α = 0.05) has the disadvantage that the researcher truly does not know how far or how close is the value of the test statistic in the critical region. Calculate the p-value (i.e., tru..
In the picture the can says "Mixed Nuts: Less than 50% are peanuts" and Billy says "I'm making sure less than half of these nuts are peanuts." Is Billy taking a random sampling
1.we are establishing a quality control program for a process and need to establish the mean and standard deviation for
Refer to Exercise 6.26 (page 371). In addition to the computer computing mpg, the driver also recorded the mpg by dividing the miles driven by the number of gallons at each ?ll-up.
State the null and alternative hypothesis. population standard deviation is $2500 and level of test is 0.05 what is the critical value?
a fair coin is repetitively tossed 2n times n is very large. what is the probability for the number of heads to be in
Normal distribution or a t-distribution should be used or whether neither of these can be used to construct a confidence interval. Assume the distribution of prices is skewed left.
a car manufacturer claims that the miles per gallon for a certain model has a mean equal to 40.5 miles with a standard
What distinguishes regression from ANOVA? What are the assumptions and limitations of each, and when should one be used in place of the other
A sample of 65 observations is selected from one population with a population standard deviation of 0.75. The sample mean is 2.67.
Makers of generic drugs are required to demonstrate that their generic drug does not differ significantly from the "reference" drug it is intended to imitate.
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