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its stats questions that would be on a test. I own a TI-83 calculator.

I need step by step instructions for the following questions please. its stats questions that would be on a test. I own a TI-83 calculator. If you could include what to put into the calculator that would be awesome. 

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Question 1:
Here we are testing whether the tensile strength is greater for the new alloy or not. As these are
independent samples so the hypotheses are,
H0: µold - µnew = 0 and H1: µold - µnew...

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