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please see below.. CHALLENGE ACTIVITY 8.1.1: Hypothesis testing for two population means (left-tailed t-test). 270604.1953466.qx3zqy7 Jump to level 1 A company would like to know

please see below..

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CHALLENGE ACTIVITY 8.1.1: Hypothesis testing for two population means (left-tailed t-test). 270604.1953466.qx3zqy7 Jump to level 1 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 29 t Stat 2.282 P(T

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