Use the t-distribution to find a confidence interval for a difference in means μ₁ - ₂ given the relevant sample results. Give the bes estimate for μ₁-₂, the margin of error, and the confidence interval. Assume the results come from random samples from populations that are approximately normally distributed. A 90% confidence interval for μ₁ - ₂ using the sample results x₁ = 78.5, s₁ = 12.0, n₁ = 25 and ₂ = 63.0, s₂ = 7.9, n₂ = 20 Enter the exact answer for the best estimate and round your answers for the margin of error and the confidence interval to two decimal places. Best estimate = 15.5 Margin of error = i 1.575 Confidence interval: i 10.598 to i 20.402

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Use the t-distribution to find a confidence interval for a difference in means μ₁ - ₂ given the relevant sample results. Give the best
estimate for ₁-₂, the margin of error, and the confidence interval. Assume the results come from random samples from
populations that are approximately normally distributed.
A 90% confidence interval for ₁ - ₂ using the sample results ₁ = 78.5, s₁ = 12.0, n₁ = 25 and x₂ = 63.0, s2 = 7.9, n₂ = 20
Enter the exact answer for the best estimate and round your answers for the margin of error and the confidence interval to two
decimal places.
Best estimate =
15.5
Margin of error = i 1.575
Confidence interval: i 10.598
to i 20.402
Transcribed Image Text:Use the t-distribution to find a confidence interval for a difference in means μ₁ - ₂ given the relevant sample results. Give the best estimate for ₁-₂, the margin of error, and the confidence interval. Assume the results come from random samples from populations that are approximately normally distributed. A 90% confidence interval for ₁ - ₂ using the sample results ₁ = 78.5, s₁ = 12.0, n₁ = 25 and x₂ = 63.0, s2 = 7.9, n₂ = 20 Enter the exact answer for the best estimate and round your answers for the margin of error and the confidence interval to two decimal places. Best estimate = 15.5 Margin of error = i 1.575 Confidence interval: i 10.598 to i 20.402
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