The average credit card debt for a recent year was $9205. Five years earlier the average credit card debt was $6618. Assume sample sizes of 37 were used and the population standard deviations of both samples were $1913. Find the 99% confidence interval of the difference in means. Use μ₁ for the most recent average debt. Round the answers to two decimal places.
The average credit card debt for a recent year was $9205. Five years earlier the average credit card debt was $6618. Assume sample sizes of 37 were used and the population standard deviations of both samples were $1913. Find the 99% confidence interval of the difference in means. Use μ₁ for the most recent average debt. Round the answers to two decimal places.
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 1GP
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