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A sales manager wants to know if the sales productivity of her east region is greater than the sales productivity of her west region. The results of a sample of 12 salespersons from the east region and 16 salespersons from the west region are shown below. Perform the appropriate hypothesis test using alpha = .05. What can you conclude?
East West65.5 72.183.0 52.373.2 63.383.1 63.371.1 79.976.8 59.769.9 74.886.8 78.274.9 75.970.1 67.960.5 78.072.3 60.063.144.856.465.9
An apple juice producer buys all his apples from a conglomerate of apple growers in one northwest state. The amount of juice squeezed from each of these apples
The diameters of bolts produced by a certain machine are normally distributed with a mean of 0.30 Inches and a standard deviation of 0.01 inches.
Find out the operating characteristics for this system.
Select one psychological personality assessment instrument or inventory to serve as the basis of this assignment. Explore the psychological literature to find three to five articles that test the use of this inventory or assessment on obsessive-com..
An internet company has redesigned its website to improve the online experience of its customers. To test whether the new design has improved its customers' experience it has asked people to comment on whether they prefer the new format or not.
A pollster calls 500 randomly selected people and all 500 respond to her first question. Because the subjects agreed to respond, is the sample a voluntary response sample?
State the alternate hypothesis for this study? What critical value should be used to determine the rejection region? Use the 1 proportion Z-test.
What is correlation analysis? How can correlation analysis be used in a business decision or examples specifically related to strategy formulation and implementation?
A side effect of a certain anesthetic used in surgery is the hiccups, which occurs in about 10 percent of the cases. If three patients are scheduled for surgery today and are to be administered this anesthetic, compute the probability that
What is the best first glance prediction you can give the customer about the value of his house given your 2 variable linear regression analysis?
Describe how you would develop a random sample from among students.
The Duracells had an average lifetime of 18.67 hours (SD = 1.176 hours) while the Energizer batteries had an average lifetime of 16.83 hours (SD = 2.878 hours). Assuming the population standard deviations to be equal, what is the test statisitic a..
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