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Are Canadian professional hockey teams consistent over time? Here are the wins per season (out of 82 games) for the six Canadian teams in the National Hockey League (NHL). For comparison, in 1995-1996, the top team in the Eastern Conference was the Pittsburgh Penguins with 49 wins and the top team in the Western Conference was the Detroit Red Wings with 62 wins. In 2005-2006, the top team in the Eastern Conference was the Ottawa Senators with 52 wins, and the top team in the Western Conference was, once again, Detroit with 58 wins. (The Winnipeg Jets moved and became the Phoenix Coyotes in 1996, so we didn't include them here.)
a. What is the independent variable and what are its levels? What is the dependent variable?
b. Is this a between-groups or within-groups design? Explain.
c. Why might it be preferable to use a nonparametric hypothesis test for these data?
d. Conduct all six steps of hypothesis testing for a Wilcoxon signed-rank test for matched pairs.
e. How would you present these statistics in a journal article?
a certain length measurement is made with the following resultsreading 1 2 3 4 5 6 7 8 9 10x m 12.54 12.73 12.44 12.51
How should the data be produced in order for your test to be valid? (In fact, the samples came in part from asking parents who were subjects in another study.
construct your own empirical probability situation. that is determine a probability value in relation to your expected
a. what is the final task after completing the analysis of significant results?b. why is the size effect useful at this
Scores of an aptitude test are normally distributed with a mean of 280 and a standard deviation of 30. Determine the percentage of samples of size 4 that have a mean score within 21 points of the population mean score of 280.
Explain in your own words what it means to say that we have 95% confidence in the interval estimate. Then give an example of something you do in your life.
Refer to the previous two exercises. PROC GENMOD in SAS reports the maximized log likelihood as 3475.19 for the model of mutual independence (df = 11), 3538.05 for the model of homogeneous association (df = 5), and 3539.58 for the model containing..
Employees of a local university have been classified according to gender and job type.
Employ the frequency distribution, which describes the response of a survey of college students when asked, "How often do you wear a seat belt when riding in a car driven by someone else?"
What are the steps that should be used in evaluating regression models? Write each step in the order it should be evaluated.
An economics professor randomly selected 100 millionaires in the United States. The average age of these millionaires was 54.8 years with a standard deviation of 7.9 years.
An IQ test is designed so that the mean is 100 and the standard deviation is 16 for the population of normal adults. Find the sample size necessary to estimate the mean IQ score of statistics students such that it can be said with 99% confidence t..
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