Homework 3

Homework 3 - Brett Rojas September 30, 2010 OM 210 301...

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Brett Rojas September 30, 2010 OM 210 – 301 Homework #3 Section 3.2, Problem 17 a) Mean price of home theater boxes with DVD players: 410 Mean price of home theater boxes without DVD players: 310 b) With DVD Player Without DVD Player Range 200 70 Variance 5500 800 Standard Deviation 74.16 28.28 According to the data, home theater boxes that include a DVD player tend to vary more in price than those that didn’t include a DVD player. a. With DVD player = $410 Without DVD player = $310 b. With DVD player = $410 Without DVD player = $310 c. There is high variability in both samples (CV of over .05). d. The CV of home theater boxes with a DVD player is .18 so there is a lot of variability and the mean is not a good representation of the sample data. The CV of home theater boxes without a DVD player is .09 so there is a lot of variability and the mean is not a good representation of the sample data. e. The data shows high variability in both samples (both CV > .05). f. The sample with DVD players is slightly skewed to the right because the mean of 410 is greater than the median of 400. The sample without DVD players is slightly skewed to the right as well because the mean of 310 is greater than the
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This note was uploaded on 04/04/2012 for the course OM 210 taught by Professor Singer during the Fall '08 term at George Mason.

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Homework 3 - Brett Rojas September 30, 2010 OM 210 301...

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