Administrators at the national headquarters of the Center for the Display of Visual Arts are authorized to make small work-related purchases using purchasing cards. The average amount administrators charge to their cards per month is $ 278 with a standard deviation of 33 dollars. The data are normally distributed. The auditing staff at the center is concerned with the spending patterns of an administrator who has averaged $ 349 per month in charges. What percentage of balances are between $ 278 and $ 349 per month? What percentage of balances exceed $ 349 per month? Should the auditing staff be concerned about the spending habits of this particular administrator?
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