Question: 64. Refer to the Lincolnville School bus data. Develop a regression equation that expressesthe relationship between age of the bus and maintenance cost. The age

64. Refer to the Lincolnville School bus data. Develop a regression equation that expressesthe relationship between age of the bus and maintenance cost. The age of thebus is the independent variable.a. Draw a scatter diagram. What does this diagram suggest as to the relationship betweenthe two variables? Is it direct or indirect? Does it appear to be strong or weak?b. Develop a regression equation. How much does an additional year add to the maintenancecost. What is the estimated maintenance cost for a 10-year-old bus?c. Conduct a test of hypothesis to determine whether the slope of the regression line isgreater than zero. Use the .05 significance level. Interpret your findings from parts (a),(b), and (c) in a brief report.

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