Can the economist conclude that the mean FICO score is greater than 720
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
to
, with a score of
or more indicating that a person is a very good credit risk. An economist wants to determine whether the
. She finds that a random sample of
people had a mean FICO score of
with a standard deviation of
. Can the economist conclude that the mean FICO score is greater than
? Use the
level of significance and the
-value method with the
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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