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Two random samples were selected independently from populations having normal distributions. The statistics given below were extracted from the samples. Complete parts a through c. X₁ = 38.8 X₂ = 30.2 a. If o, 5 and o₂ =3 and the sample sizes are n₁ = 40 and n = 40, construct a 99% confidence interval for the difference between the two population means. The confidence interval is 6.23 s (H₁-H₂) ≤ 10.98 (Round to two decimal places as needed.) b. If o, 0₂, s, =5, and s₂ =3, and the sample sizes are n₁ = 20 and n., =20, construct a 99% confidence interval for the difference between the two population means. The confidence interval is ≤ (H₁-H₂) = (Round to two decimal places as needed.).

Two random samples were selected independently from populations having normal distributions. The statistics given below were extracted from the samples. Complete parts a through c. X₁ = 38.8 X₂ = 30.2 a. If o, 5 and o₂ =3 and the sample sizes are n₁ = 40 and n = 40, construct a 99% confidence interval for the difference between the two population means. The confidence interval is 6.23 s (H₁-H₂) ≤ 10.98 (Round to two decimal places as needed.) b. If o, 0₂, s, =5, and s₂ =3, and the sample sizes are n₁ = 20 and n., =20, construct a 99% confidence interval for the difference between the two population means. The confidence interval is ≤ (H₁-H₂) = (Round to two decimal places as needed.).

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Two random samples were selected independently from populations having normal distributions. The statistics given below were extracted from the samples. Complete parts a through c. X₁ = 38.8 X₂ = 30.2 a. If o, 5 and o₂ =3 and the sample sizes are n₁ = 40 and n = 40, construct a 99% confidence interval for the difference between the two population means. The confidence interval is 6.23 s (H₁-H₂) ≤ 10.98 (Round to two decimal places as needed.) b. If o, 0₂, S₁ =5, and s₂ =3, and the sample sizes are n₁ = 20 and n., =20, construct a 99% confidence interval for the difference between the two population means. The confidence interval is ≤ (H₁-H₂) = (Round to two decimal places as needed.).
Transcribed Image Text:Two random samples were selected independently from populations having normal distributions. The statistics given below were extracted from the samples. Complete parts a through c. X₁ = 38.8 X₂ = 30.2 a. If o, 5 and o₂ =3 and the sample sizes are n₁ = 40 and n = 40, construct a 99% confidence interval for the difference between the two population means. The confidence interval is 6.23 s (H₁-H₂) ≤ 10.98 (Round to two decimal places as needed.) b. If o, 0₂, S₁ =5, and s₂ =3, and the sample sizes are n₁ = 20 and n., =20, construct a 99% confidence interval for the difference between the two population means. The confidence interval is ≤ (H₁-H₂) = (Round to two decimal places as needed.).
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