92 Section Exercise The average credit card debt for a recent year was $9192. Five years earlier the average credit card debt was $6618. Assume sample sizes of 31 were used and the population standard deviations of both samples were $1931. Find the 99% confidence interval of the difference in means. Use u, for the most recent average debt. Round the answers to two decimal places. s >ri- 'ri> ola

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9.2 Section Exercise 18
The average credit card debt for a recent year was $9192. Five years earlier the average credit card debt was $6618. Assume
sample sizes of 31 were used and the population standard deviations of both samples were $1931. Find the 99% confidence
interval of the difference in means. Use u, for the most recent average debt. Round the answers to two decimal places.
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Transcribed Image Text:9.2 Section Exercise 18 The average credit card debt for a recent year was $9192. Five years earlier the average credit card debt was $6618. Assume sample sizes of 31 were used and the population standard deviations of both samples were $1931. Find the 99% confidence interval of the difference in means. Use u, for the most recent average debt. Round the answers to two decimal places. do Save For Later Submit Assignment Check Answer © 2021 McGraw-Hill Education. All Rights Reserved. Terms of Use I Privacy ere to search hp ll %24 %24
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