As a result of six sigma project, a financial services firmimplemented a training program, termed FuturesStrategizing. To test the effectiveness of the FuturesStrategizing, ten employees’ one-year average stockperformance was considered before and after FuturesStrategizing sessions. Data is below. Does evidence suggestthat this is an effective training program? Explain.
Before (%return): 10, 12, 8, -5, -1, 5, -3, 16, -2, 13
After (% return): 12, 16, -2, 10, 11, 18, -8, 20, -1,21
Expert Answer
Since the same employees’ data has been considered before andafter, we will perform a paired-sample t-test.

Null
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