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Students at Grantham University were assigned to a project. This project involved timing how fast students could log on to Angel. The students would then use that data to decide if there was a difference between male and female performances. Would the resulting sets of data represent dependent or independent samples? Why? What could the students change in the project to have it represent the other?
Select two non-parametric tests utilized in business decision making? Give an example of each test with an appropriate business situation.
Suppose we compare two population means, μ 1 - μ 2 . In each case, indicate how μ 1 relates to μ 2 :
A clinical investigator is interested in understanding the relationship between demographic factors and congestive heart failure, measured by a cardiac index (CI).
If a six appears for the third time, the turn of the player ends without moving the token. Determine the sample space of one such throw and determine the probability for each event.
37 percent of managers have MBA degrees. Using probability formulas. Determine the proportion of employees who are managers and have MBA degrees.
What proportion of sample means would be between 1.31 and 1.33 inches?
Would it be reasonable to conclude that the population distribution is Poisson with a mean of 2.0?
A random sample of eight cars from each manufacturer is selected, and eight drivers are selected to drive each automobile for a specified distance.
The distance is recorded for each hit, and the results are shown below, organized by brand. Carry out a complete analysis using ANOVA and a 5% significance level.
What was the purpose of calculating a Cohen's d? When is a Cohen's d calculated? Interpret d=.90. What does it mean in this example?
Bob Nale is the owner of Nale's Quick Fill. Bob would like to estimate the mean number of gallons of gasoline sold to his customers.
Blockbuster is testing a new policy of waiving all late fees on DVD rentals using a sample of 10 randomly chosen customers.
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