Question

To test the claim that the resistance of electric wire can be reduced by at
least 0.05 ohm by alloying, 25 values obtained for each alloyed wire and
standard wire produced the following results:
Mean Standard Deviation
Alloyed wire 0.083 ohm 0.003 ohm
Standard wire 0.136 ohm 0.002 ohm
Test at 5% level of significance whether or not the claim is substantiated

Answer 1

Step-by-step explanation:

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