Business, 20.02.2020 22:52 SRTBANDIT4655
In reviewing your previous reports, several questions came to Elizabeth Burke’s mind. Use point and interval estimates to help answer these questions. 1.What proportion of customers rate the company with "top box" survey responses (which is defined as scale levels 4 and 5) on quality, ease of use, price, and service in the 2014CustomerSurvey. csvworksheet data file? How do these proportions differ by geographic region? 2.What estimates, with reasonable assurance, can PLE give customers for response times to customer service calls? 3.Engineering has collected data on alternative process costs for building transmissions in the worksheet data fileTransmissionCosts. csv. Can you determine whether one of the proposed processes is better than the current process? 4.What would be a confidence interval for an additional sample of mower test performance as in the worksheet data fileMowerTest. csv? 5.For the data in the worksheet data fileBladeWeight. csv, what is the sampling distribution of the mean, the overall mean, and the standard error of the mean? Is a normal distribution an appropriate assumption for the sampling distribution of the mean? 6.How many blade weights must be measured to find a 95% confidence interval for the mean blade weight with a sampling error of at most 0.5? What if the sampling error is specified as 0.2? Answer these questions and summarize your results in a formal report to Ms. Burke.
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In reviewing your previous reports, several questions came to Elizabeth Burke’s mind. Use point and...
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