Consider the accompanying data on breaking load (kg/25 mm width) for various fabrics in both an unabraded condition and an abraded condition. Use the paired t test to test H0: ?D = 0 versus Ha: ?D > 0 at significance level 0.01. (Use ?D = ?U − ?A.) Fabric

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Consider the accompanying data on breaking load (kg/25 mm width) for various fabrics in both an unabraded condition and an abraded condition. Use the paired t test to test H0: ?D = 0 versus Ha: ?D > 0 at significance level 0.01. (Use ?D = ?U − ?A.)

Fabric
  1 2 3 4 5 6 7 8
U     36.1     55.0     51.3     38.5     43.2     48.8     25.6     49.7  
A     28.5     20.0     46.0     34.0     36.0     52.5     26.5     46.5  

 

Calculate the test statistic and determine the P-value. (Round your test statistic to one decimal place and your P-value to three decimal places).

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