Question: For the data in Table 8.6, the sample variances are 116.04 and 361.65, respectively. Verify that based on Welchs method, the .95 confidence interval for

For the data in Table 8.6, the sample variances are 116.04 and 361.65, respectively. Verify that based on Welch’s method, the .95 confidence interval for the difference between the means is (1.96, 20.83). Check this result with the R function yuen.

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