Use the t-distribution to find a confidence interval for a difference in means μ₁ −µ₂ given the relevant sample results. Give the best estimate for μ₁ −μ₂, 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 − µ₂ using the sample results ₁ = 77.4, s₁ = 11.6,n₁ = 25 and ₂ = 70.0, s2 = 7.8, 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 = Margin of error = i Confidence interval: i to i

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Use the t-distribution to find a confidence interval for a difference in means μ₁ −μ₂ given the relevant sample results. Give the best
estimate for μ₁ −μ₂, 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 − µ₂ using the sample results ₁ = 77.4, s₁ = 11.6, n₁ = 25 and ₂ = 70.0, s2 = 7.8, 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 =
Margin of error = i
Confidence interval: i
to i
Transcribed Image Text:Use the t-distribution to find a confidence interval for a difference in means μ₁ −μ₂ given the relevant sample results. Give the best estimate for μ₁ −μ₂, 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 − µ₂ using the sample results ₁ = 77.4, s₁ = 11.6, n₁ = 25 and ₂ = 70.0, s2 = 7.8, 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 = Margin of error = i Confidence interval: i to i
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