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SYM 506-Week 8 Grand Canyon University Practice Questions
Complete the problems below from the textbook. You will need to use the "Lincolnville School District Bus Data" file for this assignment.Chapter 12 – Problem 51Refer to the Lincolnville School District bus data.a. Conduct a test of hypothesis to reveal whether the mean maintenance cost is equalfor each of the bus manufacturers. Use the .01 significance level.b. Conduct a test of hypothesis to determine whether the mean miles traveled since thelast maintenance is equal for each bus manufacturer. Use the .05 significance level.Chapter 15 – Problem 57Please refer attachmentChapter 15 – Problem 64Refer to the Lincolnwood School District bus data.a. Suppose we consider a bus “old” if it has been in service more than 8 years. At the.01 significance level, can we conclude that less than 40% of the district’s buses areold? Report the p-value.b. Find the median maintenance cost and the median age of the buses. Organize thedata into a two-by-two contingency table, with buses above and below the median ofeach variable. Determine whether the age of the bus is related to the amount of themaintenance cost. Use the .05 significance level.c. Is there a relationship between the maintenance cost and the manufacturer of thebus? Use the breakdown in part (b) for the buses above and below the median maintenancecost and the bus manufacturers to create a contingency table. Use the .05significance level.For problems requiring computations, please ensure that your Excel file includes the associated cell computations and/or statistics output. This information is needed in order to receive full credit on these problems.Submit output in one Excel file.
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25 Apr 2019
Due Date: 29 May 2019
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SYM 506-Week 8 Grand Canyon University Practice Questions
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