Several different aluminum alloys are under consideration for use in heavy-duty circuit-wiring applications. Among the desired properties is low electrical resistance, and specimens of each wire are tested by applying a fixed voltage to a given length of wire and measuring the current passing through the wire. Given the following results, would you conclude that these alloys differ in resistance?

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Alloy 1 1.085 1.016 1.009 Current (amperes) 1.034 234 2 1.051 0.993 1.022 3 0.985 1.001 0.990 1.101 1.015 0.988 1.011