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# (Solved): An article reported on a study in which each of 13 workers was provided with both a conventional sho ...

An article reported on a study in which each of 13 workers was provided with both a conventional shovel and a shovel whose blade was perforated with small holes. The authors of the cited article provided the following data on energy expenditure [kcal/kg(subject)/lb(clay)].

 Worker: Conventional: Perforated: Worker: Conventional: Perforated: 1 2 3 4 5 6 7 0.0016 0.0015 0.0018 0.0022 0.001 0.0016 0.0028 0.0016 0.001 0.0019 0.0013 0.0011 0.0017 0.0024 8 9 10 11 12 13 0.0029 0.0015 0.0014 0.0023 0.0017 0.002 0.0029 0.0013 0.0013 0.0017 0.0015 0.0013

Do these data provide convincing evidence that the mean energy expenditure using the conventional shovel exceeds that using the perforated shovel? Test the relevant hypotheses using a significance level of 0.05. (Use ????d = ????conventional − ????perforated.)

t =

Find the df.

df =

Use technology to find the P-value. (Round your answer to four decimal places.)

P-value =

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