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# SYM - 506 Lincolnville School District bus data (7). xls 48. using the Lincolnville school District bus data.

b. A study of school bus fleets reports that the average per bus maintenance cost is $4000 per year. using the maintenance cost variable, conduct a hypothesis test to determine whether the mean maintenance cost for the Lincolnville bus fleet is more than $4000nat the .01 significance level. determine the p value and report the results.

71. using the Lincolnville school District bus data

A. Develop a 95% confidence interval for the mean bus maintenance cost.

B. Develop a 95% confidence interval for the mean bus odometer miles.

C. Submit a business memo to the state transportation official to report your results.