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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?
If the sample size had been 8 patients instead of 50, what further assumption(s) would have been necessary in order to solve this problem?
Pearson Correlation cannot be used to identify non-linear relationships between two variables.
a college requires an iq of 120 or more for entrance. from what percentage of the population must it draw its students?
Assume that a 2005 poll of 1000 American voters found that 76% of Republicans favored ending the tax on dividend income, as did 42% of Democrats and 54% of Independents.
A study was completed that examined the relationship between coffee consumption and level of stress for a group of 50 undergraduate students. The correlation was .373, and it was a two-tailed test, done at the .01 level of significance.
A coin is tossed 25 times. let x + the number of tosses that result in heads(H) Consider the following rule for deciding whether or not the coin is fair. What is the probability of judging the coin to be biases when its actually fair?
If the excess return on the sample of 13 stocks averaged 3.1% and had a standard deviation of 1%, do you believe that inclusion in the Standard & Poor's 500 Index changes a stock's excess return on investment, and if so, in which direction? Explai..
What is the research question of interest?- What is the population parameter of interest?- What percentage of the sample responded with "more strict"?
What is the probability of this actually happening?
in a pizzeria they offer eight different toppings for a pizza. moreover you are allowed to double any topping if you
Assume gasoline prices for a region are normally distributed. Do the data you obtained provide enough evidence to reject the claim?
when circuit boards used in the manufacture of compact disc players are tested the long-run percentage of defectives is
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