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Discuss the assumptions for using a chi-square test. Research articles using and provide practical examples from the reseach to support your assumptions.
(a) Interpret the slope of the fitted regression Sales = 842 - 37.5 Price. (b) If Price = 20, what is the prediction for Sales? (c) Would the intercept be meaningful if this regression represents DVD sales at Blockbuster?
Identify at least 2 variables for which you would utilize a repeated-measures ANOVA in your analysis. Describe the variables and their scale of measurement.
Ten pairs of points yielded a correlation coefficient y of 0.79. If a=0.05, which of the following statements is correct if H 0:P=0? (Do not calculate a t-value.)
What are the null and alternate hypotheses? How many treatments are there? What is the critical value of F at the 5% level of significance? Indicate in words when you would reject the null hypothesis.
Calculate the test statistic. Determine the p-value of the test-statistic.
A random sample of 20 users is obtained. Using the Binomial Probability Distribution, determine the following probabilities?
Apply the EOQ model to the following quantity discount situation in which D=500 units per year, C0=$40, and the annual holding cost rate is 20%. What order quantity do you recommend?
Find the mean and the standard deviation of the sampling distribution of x, and find an interval containing 95.44 percent of all possible sample mean returns.
Describe the relevant population and the source (e.g. newspaper, TV, radio, internet, etc.). Explain why you do not believe it is accurate.
State the claim mathematically. Then write the null and alternative hypothesis. Determine whether the hypothesis test is left-tailed, right-tailed, or two-tailed.
A state meat inspector in Iowa has been given the assignment of estimating the mean net weight of packages of ground chuck labeled "3 pounds." Of course, he realizes that the weights cannot be precisely 3 pounds.
If the estimated population variance of the change scores is 20, what would the variance of the distribution of the means of change scores be?
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