23. Credit Rating When consumers apply for credit, their credit is rated using FICO (Fair, Isaac, and
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23. Credit Rating When consumers apply for credit, their credit is rated using FICO
(Fair, Isaac, and Company) scores. Credit ratings are given below for a sample of applicants for car loans. Use the sample data to construct a 99% confidence interval for the mean FICO score of all applicants for credit. If one bank requires a credit rating of at least 620 for a car loan, does it appear that almost all applicants will have suitable credit ratings?
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