2. An article in a magazine on financial affairs claimed that adults have access to an average of 6.0 credit cards. Included are bank, gasoline, telephone, and department store cards. A sample of 24 was taken of adult shoppers in major shopping malls in Detroit. The number of credit cards each of these shoppers had access to is listed below: 2 3 9. 3 8 6. 9. 8 4 6. 4 a. Test the claim made in the article at an appropriate level of significance. (State all relevant hypotheses, conditions, p-values, etc. that help you reach your result). b. Produce a relevant confidence interval designed to capture the true mean number of credit cards that adults have access to. Explain how your interval backs up the result of your test of significance from part a.

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2. An article in a magazine on financial affairs claimed that adults have access to an average of 6.0 credit
cards. Included are bank, gasoline, telephone, and department store cards. A sample of 24 was taken
of adult shoppers in major shopping malls in Detroit. The number of credit cards each of these
shoppers had access to is listed below:
2
5
3
9
6.
3
8
6.
9.
8
9.
4
5
6
4.
a. Test the claim made in the article at an appropriate level of significance. (State all relevant
hypotheses, conditions, p-values, etc. that help you reach your result).
b. Produce a relevant confidence interval designed to capture the true mean number of credit cards that
adults have access to. Explain how your interval backs up the result of your test of significance
from part a.
Transcribed Image Text:2. An article in a magazine on financial affairs claimed that adults have access to an average of 6.0 credit cards. Included are bank, gasoline, telephone, and department store cards. A sample of 24 was taken of adult shoppers in major shopping malls in Detroit. The number of credit cards each of these shoppers had access to is listed below: 2 5 3 9 6. 3 8 6. 9. 8 9. 4 5 6 4. a. Test the claim made in the article at an appropriate level of significance. (State all relevant hypotheses, conditions, p-values, etc. that help you reach your result). b. Produce a relevant confidence interval designed to capture the true mean number of credit cards that adults have access to. Explain how your interval backs up the result of your test of significance from part a.
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