Consider the weight of paper data from Technometrics in Exercise 10-32. Is there evidence that the variance of the weight measurement differs for the sheets of paper? Use α = 0.05. Explain how this test can be conducted with a confidence interval.

Exercise 10-32

An article in Technometrics (1999, Vol. 41, pp. 202€“211) studied the capability of a gauge by measuring the weights of two sheets of paper. The data follow.

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Paper Observations 3.472 3.481 3.448 3.485 3.475 3.464 3.472 3.470 3.477 3.472 3.470 3.470 3.477 3.473 3.474 3.258 3.254 3.256 3.249 3.241 3.254 3.247 3.257 3.239 3.250 3.258 3.239 3.245 3.240 3.254 2.