Referring to Table 17.2, determine whether there is a difference at the 0.05 significance level between cables made of alloy I and alloy II. Work the problem first by hand, supplying all the details for the Mann Witney U test. Follow this with the MINITAB solution to the problem.
Alloy I
Alloy II
18.3
16.4
22.7
17.8
12.6
14.1
20.5
10.7
15.9
18.9
25.3
16.1
24.2
19.6
12.9
15.2
11.8
14.7
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