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In a study conducted by the mechanical engineering department at a university, the steel rods supplied by two different companies were compared. Ten sample
In a study conducted by the mechanical engineering department at a university, the steel rods supplied by two different companies were compared. Ten sample springs were made out of the steel rods supplied by each company, and a measure of flexibility was recorded for each. The data are provided in the accompanying table. Compute both the mean and the variance in flexibility for both company A and company B. Does there appear to be a difference in flexibility between company A and company B? Click the icon to view the flexibility data. The mean for company A is The mean for company B is Type integers or decimals. Do not round.) The variance for company A is The variance for company B is Round to four decimal places as needed.) Does there appear to be a difference in flexibility between company A and company B? here to be a difference in flexibility. Company A's sample mean is company B's sample mean, and company A's variance is company B's variance Flexibility of Springs Company A: 8.7 8.2 7.2 8.4 8.9 6.7 8.0 6.0 8.6 6.6
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