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A company would like to know if efficiency can be improved through a training course for employees. A sample of employees is taken. The time

A company would like to know if efficiency can be improved through a training course for employees. A sample of employees is taken. The time taken for an employee to complete a task before training and after training is observed. Before After Mean 33.1 31.7 Variance 16.81 12.25 Observations 30 30 Hypothesized Mean Difference 0 df 29 t Stat -2.282 P(T

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