Automotive researchers have reported that building the Ford Mustang required an average of 22.3 labor hours. Under
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Automotive researchers have reported that building the Ford Mustang required an average of 22.3 labor hours. Under the assumption that this finding was based on the sample data in file XR09041, construct and interpret the 95% confidence interval for the population mean number of labor hours required for this model. Based on this confidence interval, would it seem very unusual if another sample of this size were to require an average of 22.9 labor hours for production of a Ford Mustang?
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As shown in the Minitab printout below the 95 confidence ...View the full answer
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