Consider the following results for independent random samples taken from two populations. Sample 1 Sample 2 n 1 = 10 n 2 = 30 x 1 = 22.5 x 2 = 20.3 s 1 = 2.1 s 2 = 4.9
Consider the following results for independent random samples taken from two populations. Sample 1 Sample 2 n 1 = 10 n 2 = 30 x 1 = 22.5 x 2 = 20.3 s 1 = 2.1 s 2 = 4.9
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.5: Comparing Sets Of Data
Problem 13PPS
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Consider the following results for independent random samples taken from two populations.
Sample 1 | Sample 2 |
n 1 = 10 | n 2 = 30 |
x 1 = 22.5 | x 2 = 20.3 |
s 1 = 2.1 |
s 2 = 4.9 |
- What is the point estimate of the difference between the two population means (to 1 decimal)?
- What is the degrees of freedom for the t distribution (round down your answer to nearest whole number)?
- At 95% confidence, what is the margin of error (to 1 decimal)?
- What is the 95% confidence interval for the difference between the two population means (to 1 decimal)?
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