Two different types of tips can be used in a Rockwell hardness tester. Eight coupons from test
Question:
Two different types of tips can be used in a Rockwell hardness tester. Eight coupons from test ingots of a nickel based alloy are selected, and each coupon is tested twice, once with each tip. The Rockwell C-scale hardness readings are shown in the following table. Use the sign test with a = 0.05 to determine whether or not the two tips produce equivalent hardnessreadings.
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1 Parameters of interest are the median hardness readings for the two t...View the full answer
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Related Book For 
Applied Statistics And Probability For Engineers
ISBN: 9781118539712
6th Edition
Authors: Douglas C. Montgomery, George C. Runger
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