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Question: Suppose that six persons have an illness. Three are randomly chosen to receive an experimental treatment, and the remaining three serve as a control group. After treatment, a physician examines all subjects and assigns ranks to the severity of their symptoms. The patient with the most severe condition has rank 1, the next most severe has rank 2, and so on up to 6. It turns out that the patients in the treatment group have ranks 3, 5, and 6. The patients in the control group have ranks 1, 2, and 4. Is there any evidence that the treatment has an effect on the severity of symptoms? Use the randomization distribution of the sum of ranks in the treatment group to obtain a p-value. (First find the sum of ranks in the treatment group. Then write down all 20 groupings of the 6 ranks; calculate the sum of ranks in the treatment group for each. What proportion of these give a rank-sum as large as or larger than the observed one?)
Construct a partial enumerative definition for the following terms by naming three members of the class the term denotes.
Consider an experiment that results in a positive outcome with probability 0.38 and a negative outcome with probability 0.62. Create a new experiment consisting of repeating the original experiment 3 times. Assume each repetition is independent of..
Write a current APA-style Results section based on your analyses. All homework "Results sections" must follow the example given in the SPSS tutorials and the Course Content document "Writing Results of Statistical Tests in Current APA Format" (not..
a. Figure the means and standard deviations for the each group: governors and CEOs. b. Explain, to a person who has never had a course in statistics, what you have done.
Find the least-squares regression line - Find the least squares estimates of γ0 and β1.
investigators designed a physical activity intervention to increase physical activity at school and at home. they also
Find the five-number summary for Group 1.- Find the five-number summary for Group 2.- Compare the values of the range for the two groups.
Examine the data below showing the weights (in pounds) of randomly selected checked bags for an airline's flights on the same day. (a) At α = .05, is the mean weight of an (a) At α = .05, is the mean weight of an international bag greater? Show the h..
Compute fraction of the employees cost between $1,500 and $2,000 per year? Evaluate percent that didn't have any dental expense.
Problem 1: The employees have indicated that 95% of employees in one of the departments are receiving higher salaries than any other department because their supervisor parties with them each weekend. Some employees only have an hourly rate which..
The target value for the diameter of a certain type of driveshaft is .75 in. The size of the shift in the average diameter considered important to detect is .002 in. Sample average diameters for successive groups of n 5 4 shafts are as follows:
In a binomial situation, n = 4 and 1r = .25. Determine the probabilities of the following events using the binomial formula.
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