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Suppose that a population is normally distributed with a mean of 100 and a standard deviation of 15. Would it be unusual for the mean of a sample of 3 to be 115 or more? Why or why not?
A certain firm specializing in the manufacture and sale of free time clothing has 80 retail stores in Florida and 140 in California. With each state as a stratum, the firm wishes to estimate average sick-leave time per employee for the past year
Explain your findings (including the logic of comparing within-group to between-group population variance estimates, how each of these is figured, and the F distribution).
When creating a 99% confidence interval for the true average difference in cholesterol levels by the drug, what is the margin of error?
What percentage of bottles can we expect to have a volume less than 32 oz?
Compute the value of the test statistic. (Negative amount should be indicated by a minus sign. Round your answer to 2 decimal places.)
Determine the probability of fatal accident over lifetime? Describe your reasoning carefully. Suppose independent events. Why might the supposition of independence be violated?
What can we conclude from these figures at a level of significance of .01?
Determine the mean number of times the machine was used per day.
In terms of the standard scores for both sections, the score of which section was better? What are the z-scores for both sections?
Any analysis required to check the required conditions (note that if you find that you cannot meet the required conditions for the test you expected to do, you must use the appropriate non-parametric test)
Based on these data, explain whether or not course attendance had any effect on determining of a restaurants violation of health code.
Compute the effect size with gender as the grouping variable and ADDSC as the dependent variable.
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