A Rockwell hardness-testing machine presses a tip into a test coupon and uses th

Question

A Rockwell hardness-testing machine presses a tip into a test coupon and uses the depth of the resulting depression to indicate hardness. Two different tips are being compared to determine whether they provide the same Rockwell C-Scale hardness readings. Nine coupons are tested, with both tips being tested on each coupon. The data are as follows. State any assumptions necessary to test the claim that both tips produce the same Rockwell C-scale hardness readings. Apply an appropriate statistical method to determine whether the data support the claim that the difference in Rockwell C-scale hardness readings of the two tips is significantly different from zero.

Explanation / Answer

posting question in wrong section...itz not probability itz electrical engineering

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