Assuming that the distribution of the measurements made was normal, 13 measurements were made for the melting points of copper and it was observed that the mean and variance were 169 and 81, respectively. Test whether the melting point variability of copper is different from 64 at the 1% significance level, interpret the decision you made as a result of the test. While testing the hypothesis test, apply the 4 stages and show them separately.

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