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How were many African Americans in the South affected after Reconstruction ended in 1877?
You are going to invest $20,000 in a portfolio consisting of assets X, Y, Z as follows:
suppose you work for a company that produces cables and wish to state that less than 0.1 0.001 of your cables are
A market researcher believes that brand perception of one of the company's products may vary between different groups. After interviewing286 persons, the following data was compiled. Can we conclude that brand perception is dependent on age
As part of a curriculum review, the psychology department would like to select a simple random sample of 20 of last year's 140 graduates to obtain information on how graduates perceived the value of the curriculum. Describe two different methods t..
the u.s. adult population by age is as follows the world almanac 2009. the data are in millions of people. age number
How many total subjects should be studied to have 80% power for detecting a reduction of 10 mmHg in SBP due to exercise, assuming a 0.01 type I error and 2-sided alternative hypothesis? Briefly describe the approach you used
1. What are some of the principal elements of E.H. Sutherland's contribution to the study of white collar crime? 2. What are some of the limitations of Sutherland's approach
Select a variable. Compare the mean of the variable for a sample of 30 for one group with the mean of the variable for a sample of 30 for a second group. Use a z test.
A random variable Y is uniformly distributed over a range of 0 to 2*pi. Another random variable X is related to Y by X=cos(Y).
what does p .05 mean? what are some misconceptions about the meaning of p .05? why are they wrong? should all
an experimenter suspects that a certain die is loaded that is the chances that the die lands on different faces are not
two separate samples each with n12 individuals receive two different treatments. after treatment the first sample has
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