Homework 3 - Brett Rojas OM 210 301 Homework#3 Section 3.2...

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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
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