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1. List and describe the three assumptions of ANOVA.
2. What is an independent sample?
3. When should researchers use different hypothesis tests for independent and related samples?
4. Why is the F distribution important?
5. What is the difference between a one-way-ANOVA and a two-way-ANOVA?
Is there sufficient evidence to support the claim that site has an effect on the amount of pesticide?
Using the original data, test at the 5% significance level that the population standard deviation of studying times is greater than 4 hours.
Then, give two examples of correlation which are evaluated in a business environment and discuss the decision made by evaluating the correlation.
Students will conduct one brief research exercise that will be written up as a research report using APA style.
Formulate this statement as a multiple regression model (form only, without parameter estimation).
Suppose it is desired to estimate the population mean number of miles with a margin of error of ± 2 miles at 95% confidence. Do the data provide this desired level of precision? What action, if any, would you recommend be taken?
It is estimated that .44 percent of the callers to the customer service department of Dell Inc. Will receive a busy signal. What is the probability that of today's 1200 callers at least 5 will receive a busy signal? Use the poisson approximation t..
In a randomized clinical trial of timolol vs. placebo in patients surviving acute myocardial infarction, the total deaths at an average of 24 months after treatment were found to be 65 out of 720 in the Timolol group and 112 out of 860 in the plac..
Using the following data on 15 workers, construct an exact 95% confidence interval for µ.
Is the z value positive or negative? Explain why it should be positive or negative.
Can and how would you apply basic probability concepts to facilitate business decision making? Critically discuss the difference between discrete and continuous probability distributions?
At the .05 significance level, can we conclude that the mean waiting time is less than 3 minutes?
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