Can you conclude ate the a = 0.05 level that the median number of species for a retention time of 30 days differs from the median for retention time of 12 days? Compute the appropriate test statistic, find the P- value and stat e a conclusion.
Answer to relevant QuestionsProvide an example of a study, either real or hypothetical, that is conducted by people who have an interest in the outcome. Explain how the results might possibly be misleading. Music sales: In recent years, sales of digital music ( downloads) have been increasing, while sales of physical units ( CDs, cassettes, and others) have been declining. The following table presents the number of units sold ( ...Royalty: Following are the ages at death for all English and British monarchs since 1066. a. Construct a frequency distribution with approximately eight classes. b. Construct a frequency histogram based on this frequency ...Construct a back- to- back stem- and- leaf plot for these data, using two lines for each stem. Which do you think illustrates the comparison better, the histograms or the back- to- back stem- and- leaf plot? Why? Base on the results of the tests performed in Exercise 1 – 3, which of the following is the best conclusion i. We can conclude that the median number of species increases as the solids retention time increases from 3 to ...
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