10-42. Two different analytical tests can be used to deter- mine the impurity level in steel alloys. Eight specimens are tested using both
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10-42. Two different analytical tests can be used to deter-
mine the impurity level in steel alloys. Eight specimens
are tested using both procedures, and the results are shown in
the following tabulation. Is there sufficient evidence to con-
clude that both tests give the same mean impurity level,
using a = 0.01?
Specimen
Test 1
Test 2
1.2
1.4
1.3
1.7
1.5
1.5
1.4
1.3
1.7
2.0
1.8
2.1
1.4
1.7
1.3
1.6
Note that 10-42 result reported above are conducted under the same conditions.

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