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6. Given two independent random samples with the following results: ?ଵ = 7 ?̅ଵ = 103...

6. Given two independent random samples with the following results: ?ଵ = 7 ?̅ଵ = 103 ?ଵ = 34 Use this data to find the 90% confidence interval for the true difference between the population means. Assume that the population variances are not equal and that the two populations are normally distributed. ?ଶ = 12 ?̅ଶ = 82 ?ଶ = 15 Step 1. Find the point estimate that should be used in constructing the confidence interval. Answer: ____________________ Step 2. Find the margin of error to be used in constructing the confidence interval. Round your answer to six decimal places. Answer: ____________________ Step 3. Construct the 90% confidence interval. Round your answers to the nearest whole number. Answer: Lower endpoint: _______________ Upper endpoint: _______________

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