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Questions: What are the requirements that must be met for a regression analysis? What happens if these requirements are violated? Why is the analysis of residuals important?
When using dummy variables in a regression equation to model a qualitative or categorical variable, the number of dummy variables should equal to
Is the normal distribution (or its special case, the standard normal distribution) effective in characterizing situations and/or in helping managers make decisions?
How can you or your department decide whether or not the variation is important? How could using a mean difference test help?
A business journal investigation of the performance and timing of corporate acquisitions discovered that in a random sample of 2,863 firms, 848 announced one or more acquisitions during the year 2000.
A class has 13 women and 18 men. If student if selected randomly, determine the probability student is a woman?
You will be graded on accuracy, completeness (addressing each point above), and effectiveness (utility, ease of reading).
The following payoff matrix has been developed for the decision problem. What is the opportunity loss when "A" is Investment alternative and "Decline" is state of nature?
What are the 2 ways in which researchers assess the reliability of their measures? Be sure you understand the difference among these 2 approaches to reliability.
Using the data file below, construct a histogram and a frequency polygon. Describe the shape of this distribution.
Calculate the standard error. With 95% confidence, find out the margin of error?
A medical school claims that more than 28% of its students plan to go into general practice. It is found that among a random sample of 130 of the school's students, 32% of them plan to go into general practice. Find the P-value for a test of the s..
The Dean of Students believes that the costs are greater this semester. What is the test value for this hypothesis?
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