The following results come from two independent random samples taken of two populations. Sample 1 n₁ = 40 113.2 Sample 2 n₂ = 35 01 = 2.4 a. What is the point estimate of the difference between the two population means? (to 1 decimal) 2 11.4 2 = 3.3 b. Provide a 90% confidence interval for the difference between the two population means (to 2 decimals). c. Provide a 95% confidence interval for the difference between the two population means (to 2 decimals).

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
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Chapter1: Starting With Matlab
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The following results come from two independent random samples taken of two populations.
Sample 1
n1 40
X 1
01 = 2.4
a. What is the point estimate of the difference between the two population means? (to 1 decimal)
I
-
13.2
I
Sample 2
35
n₂ =
X2 =
02 =
11.4
b. Provide a 90% confidence interval for the difference between the two population means (to 2 decimals).
3.3
c. Provide a 95% confidence interval for the difference between the two population means (to 2 decimals).
Transcribed Image Text:The following results come from two independent random samples taken of two populations. Sample 1 n1 40 X 1 01 = 2.4 a. What is the point estimate of the difference between the two population means? (to 1 decimal) I - 13.2 I Sample 2 35 n₂ = X2 = 02 = 11.4 b. Provide a 90% confidence interval for the difference between the two population means (to 2 decimals). 3.3 c. Provide a 95% confidence interval for the difference between the two population means (to 2 decimals).
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