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Confidence on the difference

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Reference no: EM131042451

A researcher wants to compare the average times to complete two tasks. Twelve people were selected to be in the study and each person completed both tasks. For all 12 people, the time to complete Task 1 (T1) and the time to complete Task 2 (T2) (in minutes) were recorded. After collecting the data, a 95% confidence on the difference (T1 - T2) in average time to complete the tasks was found to be (-2.4, -1.6). Which of the following interpretations is most appropriate at the 5% level of significance?

A. Based on our results, it takes longer (on average) to complete Task 1 than it does to complete Task 2

B. There is no statistically significant difference in average time to complete the tasks

C. Statistically, the average time to complete Task 1 is the same as the average time to complete Task 2

D. Based on our results, it takes longer (on average) to complete Task 2 than it does to complete Task 1

Reference no: EM131042451

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