Determinations of saliva pH levels were made in two independent random samples of seventh-grade schoolchildren. Sample A children were caries-free while sample B children had a high incidence of caries. The results were as follows: A 7.14 7.11 7.61 7.98 7.21 7.16 7.89 7.24 7.86 B 7.36 7.04 7.19 7.41 7.10 7.15 7.36 7.57 7.19 Construct and interpret a 90% confidence interval for the difference between the population means.
Determinations of saliva pH levels were made in two independent random samples of seventh-grade schoolchildren. Sample A children were caries-free while sample B children had a high incidence of caries. The results were as follows: A 7.14 7.11 7.61 7.98 7.21 7.16 7.89 7.24 7.86 B 7.36 7.04 7.19 7.41 7.10 7.15 7.36 7.57 7.19 Construct and interpret a 90% confidence interval for the difference between the population means.
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter4: Equations Of Linear Functions
Section: Chapter Questions
Problem 8SGR
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- Determinations of saliva pH levels were made in two independent random samples of seventh-grade schoolchildren. Sample A children were caries-free while sample B children had a high incidence of caries. The results were as follows:
A |
7.14 |
7.11 |
7.61 |
7.98 |
7.21 |
7.16 |
7.89 |
7.24 |
7.86 |
B |
7.36 |
7.04 |
7.19 |
7.41 |
7.10 |
7.15 |
7.36 |
7.57 |
7.19 |
Construct and interpret a 90% confidence interval for the difference between the population means.
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