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Question: A popular consumer staple was displayed in different locations in the same aisle of a grocery store to determine what, if any, effect different placement might have on its sales. The product was placed at one of three heights on the aisle-low, medium, and high- and at one of three locations in the store-at the front of the store, at the middle of the store, or at the rear of the store. The number of units sold of the product at the various height and distance combinations was recorded each week for five weeks. The following results were obtained:
a. At the 0.10 level of significance, is there an interaction effect?
b. At the 0.10 level of significance, does the height of the product's placement have an effect on the product's mean sales?
c. At the 0.10 level of significance, does the location in the store have an effect on the product's mean sales?
Verify that there are no outliers among these values when using a boxplot, but there is an outlier using the MAD-median rule.
Are the sample means for n = 5 and n = 10 "close" to the theoretical mean, µx? Explain why or why not. Which of the two distributions of sample means.
What is the linear programming model for this problem?
A farmer has 40m of fencing with which to enclose a rectangular pen.Given that the pen is x m wide - show that it's area is (20x - x^2)m^2 and deduce that the maximum area that he can enclose (Answer given 100m^2).
Items that fail will be replaced immediately. Determine the plan using Handbook H-108, assuming that the time to failure is exponential.
Provided that the selected student excels in sports, determine the probability that the student is a boy?
The least-squares line. Open the Correlation and Regression applet. Let's use this applet to explore how the least-squares line changes when we move some observations.
Speaking to a group of analysts in January 2006, a brokerage firm executive claimed that at least 70% of investors are currently confident of meeting their investment objectives.
How would you interpret the findings of a correlation study that reported a linear correlation coefficient of -1.34? a) strong linear correlation b) weak linear correlation c) impossible, d) calculation error no linear correlation
Find the value of the interquartile range (IQR).- About what percent of the men gave a response that falls in the interval 155 to 190 pounds?
Quantitative Analysis (using the SPSS data set posted on Blackboard), Describe the characteristics of respondents (frequencies, descriptive ?statistics) and State null and alternative hypotheses
Find data set that maximizes the value of the mean.- Find a data set that minimizes the value of the mean.- Find two different data sets that have a mean equal to 3 but different standard deviations.
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