Question: With reference to the Example 8, Chapter 8, find a 98% confidence interval for the ratio of variances of the two aluminum alloys. Data From

With reference to the Example 8, Chapter 8, find a 98% confidence interval for the ratio of variances of the two aluminum alloys.

Data From Example 8

EXAMPLE 8 Graphics to accompany a two sample / test Example 7,

Chapter 2, presents strength measurements on an aluminum alloy. A second alloy

yielded measurements given in the following stem-and-leaf display. Find a 95% confidence

EXAMPLE 8 Graphics to accompany a two sample / test Example 7, Chapter 2, presents strength measurements on an aluminum alloy. A second alloy yielded measurements given in the following stem-and-leaf display. Find a 95% confidence interval for the difference in mean strength 8.

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