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15 points 8 Good credit The Fair Isaac Corporation FICO credit score is used by...

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15 points 8 Good credit The Fair Isaac Corporation FICO credit score is used by banks and other lenders to determine whether someone is a good credit risk Scores range from 300 to 850 with a score of 720 or more indicating that a person is a very good credit risk An economist wants to determine whether the mean FICO score is lower than the cutoff of 720 She finds that a random sample of 60 people had a mean FICO score of 685 with a standard deviation of 80 Can the economist conclude that the mean FICO score is less than 720 Use the a 0 10 level of significance and the P value method with the

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