A new car dealer calculates that the dealership must average more than 4.5% profit on sales of new cars. A random sample of 81 cars gives the following result.Sample Size = 81Sample Mean = 4.97% Sample Standard Deviation = 1.8%Does the sample data provide evidence to conclude that the dealership averages more than 4.5% profit on sales of new cars (usinga = .10)?
A new car dealer calculates that the dealership must average more than 4.5% profit on sales of new cars. A random sample of 81 cars gives the following result.Sample Size = 81Sample Mean = 4.97% Sample Standard Deviation = 1.8%Does the sample data provide evidence to conclude that the dealership averages more than 4.5% profit on sales of new cars (usinga = .10)?
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A new car dealer calculates that the dealership must average more than 4.5% profit on sales of new cars. A random sample of 81 cars gives the following result.Sample Size = 81Sample Mean = 4.97% Sample Standard Deviation = 1.8%Does the sample data provide evidence to conclude that the dealership averages more than 4.5% profit on sales of new cars (usinga = .10)?
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