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Question: Find a data set consisting of at least 25 numbers relating to a firm or an industry group of interest to you, from sources such as the Internet or trade journals in your library. Summarize the data using all of the techniques you have learned so far that are appropriate to your data. Be sure to use both numerical and graphical methods. Present your results as a two-page report to management, with an executive summary as the first paragraph. (You may find it helpful to keep graphs small to fit in the report.)
Random sample of workers at each of three plants. Research question: Are the mean hourly productivity levels the same for workers in these three plants?
The state unemployment tax rate is 3.1%, and the federal unemployment tax rate is 0.8%. Only $25,000 of salaries are subject to unemployment taxes.
the totals of the individual weights of garbage discarded by 62 households in one week have a sample mean of 24.443 lb.
What is the ANOVA test used for and what are its variants of use? When is the one-way ANOVA test used?
Does the scatterplot indicate that it's appropriate to calculate a correlation? Explain.- Describe the association between attendance and runs scored.
Explain what an outlier is
What is meant by illusionary correlations? Why is it so difficult for individuals to disprove their beliefs in correlations that are actually false?
When is chi-squared not valid? Give an example of a contingency table for which the chi-squared test of independence should not be used.
Consider the following competing hypotheses and accompanying sample data.
Describe the differences between the distributions of majors for women and men with percentages, with a graph, and in words.
If a die is loaded so that 6 comes up with probability 0.2 and the probabilities of the 2, 3, 4, and 5 faces are not affected, what is the assignment of probabilities to the six faces?
given a one independent variable linear equation that states cost in k and given the following information calculate
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