Question: 1. A computer manufacturing company purchases memory chips from two different suppliers. The following data give the thickness of the coated film (coded data) on

1. A computer manufacturing company purchases memory chips from two different suppliers. The following data give the thickness of the coated film (coded data) on eight randomly selected chips received from two suppliers. Can we conclude at the 5% level of significance that thickness of coated films on chips shipped by the two suppliers is the same, using the Mann-Whitney test?

Supplier I: 29 30 26 33 33 26 23 20 Supplier II: 26 18 15 15 21 30 24 30

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