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What is the difference between a fixed-effects ANOVA model and a random-effects ANOVA model? When do we use each?
Calculate the mean of the 20 samples and draw a histogram showing the 20 sample means and describe the distribution of the x-bars that you see in part b (shape of distribution, center, and the amount of dispersion).
listed below are measured amounts of lead in the air. the epa has established an air quality standard for lead of 1.5
the total blood cholesterol concentrations in mgdl are shown below for a random sample of six people. in the table
What are the theoretical considerations of hypothesis testing and why are these considerations important when conducting research studies?
If we are dealing with non-normal data we use Chebychev's Theorem. While not as precise, it does provide some level of utility. If we use Chebychev
how is the rejection region defined and how is that related to the zscore and p
Provide an example of a situation from your personal or professional experience where an two-sample test of hypothesis of dependent samples would be useful in a decision-making process.
an economic department at a state university with five faculty members-anderson box cox carter and davis-must select
Suppose that in a certain population of married couples 30% of the husbands smoke, 20% of the wives smoke, and in 8% of the couples both the husband and wife smoke. Is the smoking status (smoker or nonsmoker) of the husband independent of that of the..
If a manager wishes to develop a confidence interval estimate for estimating the difference between two population means, an increase in the size of the samples used will result in:
Quality Progress, Feburary 2005, reports on the results achieved by Bank of America in improving customer satisfaction and customer loyalty by listening to the "voice of the customer".
Let = the sample mean of the 100 scores from University X, and = the sample mean of the 100 scores from University Y. What is the probability that will x be greater than y?
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