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Lab Exercise 6

# Lab Exercise 6 - 0.024 Reject null hypothesis and that...

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Ramneek Manchanda BIO 318M- 50225 March 8, 2010 Lab Exercise 6 A. Is there a difference between the mailers? Mailers and non-mailers (categorical nominal) Money brought in (quantitative continuous) B. Box-plot, histograms or a descriptive table with the 5 number summary C. According to the mean, the new promotion is bringing in more money. However, according to the box plot, there is a lot of overlap, so there is not a whole lot of difference in profit/income. D. Large random sampling, independent cases, normal distribution. Want to know where the data set came from. E. T-tests. There is no money spent between the two processes. There is a difference between the two processes. F. No, do not know the difference between the new mailers and old mailers. G. Compares the variances of the two samples. Will be inaccurate if the two samples have different variances H. T-tests as it gives the probability of the values occurring again. I.

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Unformatted text preview: 0.024. Reject null hypothesis and that there is a difference between the old and new mailers. J. Doesn’t provide any evidence to support your backing. You want to be explicit K. The new literature is bringing in \$9 to \$133 more and we are 95% confident L. There is a significant difference between the two. M. The box plot wouldn’t let me know if there was a difference,, but with inferential statistics, we were able to come to a conclusion. Lab Exercise #2: A. Variables: Completion time (quantitative continuous) and gender (categorical nominal). Samples: men and women Randomly chosen from a set of volunteers; however, will only be true for volunteers, not all men and women. What car they use? Time of the day? Experience of the driver? B. Descriptive table, histogram, and box plot. Ramneek Manchanda BIO 318M- 50225 March 8, 2010 Lab Exercise 6 C. T-tests, as long as the histogram looks normal....
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Lab Exercise 6 - 0.024 Reject null hypothesis and that...

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