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Question: 1. Are post hoc tests necessary following a significant ANOVA testing one independent variable with two levels (k = 2)? Explain.
2. Name two measures of the proportion of variance. Which measure is a more conservative estimate of effect size?
Let y = sales at a fast-food outlet (1000s of $), x1 = number of competing outlets within a 1-mile radius, x2= population within a 1-mile radius (1000s of people), and x3 be an indicator variable that equals 1 if the outlet has a drive-up window an..
Create a scatter plot for the data. Determine the correlation coefficient for the data.
A study was conducted to estimate the mean amount spent on birthday gifts for a typical family having two children. A sample of 150 was taken, and the mean amount spent was $225.
What is the difference between a probability sample and a nonprobability sample? Which type is necessary if we wish to statistically generalize from the sample to the population?
Calculate a 95 percent confidence interval for the mean percentage share of billing volume from network television for the population of all US advertising agencies.
The overall maintenance budget over the life cycle is $C. Other constraints are that the total benefit must be at least a certain threshold, R units. What kind of knapsack problem is exemplified by this problem? Give reason for your answer.
Hint: The Topic 2 readings provide appraisal questions that will assist you to efficiently and effectively analyze each article. Refer to "Sample Format for Review of Literature," "RefWorks," and "Topic 2: Checklist."
Omar Haaris receives 5000 tripods annually from Top-Grade Supplier to meet his annual demand. Omar runs a large photographic outlet, and the tripods are used primarily with 35mm cameras. The ordering cost is $15 per order, and the carrying cost is..
Find the standard error of the difference in sample means that you would use for the method that does not assume equal variances. Do the same for the pooled approach. Compare these two estimates with each other.
Write down a paragraph about the normal distribution. In the paragraph give an example of a distribution that you would judge to be nearly normal and explain why you have made that conclusion.
We wonder if the proportion of first-year students at this university who said that they used the Internet frequently for research or homework differs.
What is the 95% confidence interval for the proportion of the population of employees who strongly dislike their current work experience?
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