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1.What are the most common reasons you would select a non-parametric test over the parametric alternative? 2.Discuss the issue of statistical power in non-parametric tests (as compared to their parametric counterparts). Which type tends to be more powerful? Why? 3.For each of the following parametric tests, identify the appropriate non-parametric counterpart: a.Dependent t test b.Independent samples t test c.Repeated measures ANOVA (one-variable) d.One-way ANOVA (independent) e.Pearson Correlation
Suppose that 40% of participants consume caffeine and smoke. If 8 participants are evaluated, what is the probability that: Exactly half of them consume caffeine and smoke?
Suppose the time necessary to process an application for a license plate for a newly purchased vehicle is normally distributed with mean of 6 minutes and standard deviation of 1.5 minutes.
Age effects in medical care. The type of medical care a patient receives may vary with the age of the patient. A large study of women who had a breast lump investigated whether or not each woman received a mammogram and a biopsy when the lump was ..
Is the difference in mean scores large enough to be important? (d) Is it reasonable to assume equal variances? (e) Carry out a formal test for equal variances at α = .05, showing all steps clearly.
Suppose that 40% of cars in your area are manufactured in the United States, 30% in Japan, 10% in Germany, and 20% in other countries. If you randomly select 6 cars, what is the probability that two of them are Japanese?
In a certain city, there are 100,000 persons age 18 to 24. A simple random sample of 500 such persons is drawn, of whom 198 turn out to be currently enrolled in college.
Population is know (from a previous large survey) to be $3000 with the standard deviation of $400. Find the 99% confidence interval for the sample mean.
Find the probability that a customer with 2 or more late payments will actually default on his payments and, in light of this probability, criticize the manager's credit plan.
An economist is interested in studying the incomes of consumers in a particular region. The population standard deviation is know to be $1,000. A random sample of 50 individuals resulted in an average income of $15,000.
A work-study engineer times a certain operation, and discovers that the average time it takes is 10 minutes, but on 15% of occasions it takes more than 13 minutes.
statistics application evaluation criteriause this rubric for the following applications factorial anova week 3 anova
Explain the difference between a left tail, two-tailed, and right tailed text. When would we choose a two tailed test? How can we tell the direction by looking at a pair of hypothesis?
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