Times Waiting times (in minutes) of customers at the Jefferson Valley Bank (where all customers enter a single waiting line) and the Bank of Providence (where customers wait in individual lines at three different teller windows) are listed below. 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?
Answer to relevant QuestionsRefer to Data Set 6 in Appendix B and use the listed IQ scores. IQ tests are designed so that the mean IQ of the population is 100. Does the sample mean suggest that the sample is consistent with the population? When data are summarized in a frequency distribution, the median can be found by first identifying the median class, which is the class that contains the median. We then assume that the values in that class are evenly ...Listed below are the numbers of manatee deaths caused each year by collisions with watercraft. Manatees, also called “sea cows,” are large mammals that live underwater, often in or near waterways. The data are listed in ...According to the “freshman 15” legend, college freshmen gain 15 pounds (or 6.8 kilograms) during their freshman year. Listed below are the amounts of weight change (in kilograms) for a simple random sample of freshmen ...Refer to Data Set 12 in Appendix B and use the numbers of years that U.S. presidents have lived after their first inauguration.
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