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When consumers apply for credit, their credit is rated using FICO scores. A random sample of...

When consumers apply for credit, their credit is rated using FICO scores. A random sample of credits ratings is obtained, and the FICO scores are summarized with these statistics: n = 18, x ̅=660.3, s = 75.9. Use a 0.05 significance level to test the claim that these credit ratings are from a population with a mean that is equal to 700.

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