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1) In each of the following cases. find the mean , variance and standard of the sampling distribution of sample proportion p
p=.5 , n=250
p=.1 , n=100
p=.8 , n=400
p=.98 , n=1.000
Write a substantive interpretation of the following unstandardized regression equation based on a sample of 743 city residents, where Y is a 10-point scale measuring the number of professional sporting events.
What information is provided by the numeral value of the Pearson correlation? What is the major distinction between the Pearson and Spear man correlations?
Interpret the correlation between each set of variables.
Two teams of workers assemble automobile engines at a manufacturing plant. Quality control personnel inspect a random sample of the teams assemblies and judge each assembly to be acceptable or unacceptable.
Formulate an appropriate hypothesis test to examine at the 10% level of significance whether the manager's worries are justified.
Three times each year, the procurement manager at Phoenix contacts National\'s marketing department to place a monthly order for each of the coming four months.
How many dissimilar computer passwords are possible?
A quality-control manager randomly selects 70 bottles of ketchup that were filled on S1 to assess the calibration of the filing machine. Determine the population study?
A manager at a local manufacturing company has been monitoring the output of one of the machines used to manufacture small aluminum plates.
For the first test, assume the data are from an independent-measures study using two separate samples.
From the calculator manufacturer?s point of view, which type of error would be considered more serious and explain why? From the printed circuit supplier?s point of view, which type of error would be considered more serious and explain why?
A survey of top executives revealed that 35 percent of them regularly read Time magazine, 20 percent read Newsweek, and 40 percent read U.S. News and World Report.
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