STA%202023%20Test%202%20Practice%20Summer%202013-2 - STA 2023 Practice Test#2 Name 1 Find the mean of the data summarized in the given frequency

STA%202023%20Test%202%20Practice%20Summer%202013-2 - STA...

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STA 2023 Practice Test #2 Name _______________________ 1.Find the mean of the data summarized in the given frequency distribution. 2.Find the mean, median, mode, and midrange for the given sample data. An experiment was conducted to determine whether a deficiency of carbon dioxide in the soil affects the phenotype of peas. Listed below are the phenotype codes where 1 = smooth yellow, 2 = smooth green, 3 = wrinkled yellow, and 4 = wrinkled green. Do the results make sense? 3.In an editorial, the Poughkeepsie Journalprinted this statement: “The median price –the price exactly in between the highest and lowest - …” Does this statement correctly describe the median? Why or why not?4.Waiting times (in minutes) of customers in a bank where all customers enter a single waiting line and a bank where customers wait in individual lines at three different teller windows are listed below. Find the mean and median for each of the two samples, then compare the two sets of results. Determine whether there is a difference between the two data sets that is not apparent from a comparison of the measures of center. If so, what is it? Single Line6.56.66.76.87.17.37.67.87.87.8Individual Line4.45.25.96.26.67.87.88.79.59.95.An insurance institute conducted tests with crashes of new cars traveling at 6 mi/h. The total cost of the damages was found for a simple random sample of the tested cars and listed below. Find the mean, median, mode, and midrange for the given sample data. Do the different measures of center differ very much?

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