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13th Edition

Anderson

Publisher: CENGAGE L

ISBN: 9781305881884

Chapter 9.3, Problem 16E

Textbook Problem

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In a study entitled How Undergraduate Students Use Credit Cards, it was reported that undergraduate students have a mean credit card balance of $3173. This figure was an all-time high and had increased 44% over the previous five years. Assume that a current study is being conducted to determine if it can be concluded that the mean credit card balance for undergraduate students has continued to increase compared to the original report. Based on previous studies, use a population standard deviation *σ =* $1000.

- a. State the null and alternative hypotheses.
- b. What is the
*p*-value for a sample of 180 undergraduate students with a sample mean credit card balance of $3325? - c. Using a .05 level of significance, what is your conclusion?

**a.**

To determine

Identify the null and alternative hypotheses.

Here, the claim is that the mean credit card balance for undergraduate students has continued to increase compare to the original report. This can be written as

**b.**

To determine

Find the *p*-value.

**c.**

To determine

State the conclusion.

STATISTICS F/BUSINESS+ECONOMICS-TEXT

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