Use the traditional method to test the given hypothesis. Assume that the population is normally distributed and that the sample has been randomly selected.
-When 12 bolts are tested for hardness, their indexes have a standard deviation of 41.7. Test the claim that the standard deviation of the hardness indexes for all such bolts is greater than 30.0. Use a 0.025 level of significance.

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The Answer of Use the traditional method to test the given hypothesis. Assume that the population is normally distributed and that the sample has been randomly selected.
-When 12 bolts are tested for hardness, their indexes have a standard deviation of 41.7. Test the claim that the standard deviation of the hardness indexes for all such bolts is greater than 30.0. Use a 0.025 level of significance.

Use the Traditional Method to Test the Given Hypothesis