Question: According to the National Association of Childcare Resources and Referral Agencies, the average cost of care for an infant in a child-care center in Illinois is $8,769 a year. These costs follow a normal distribution with a standard deviation of $925. From this population determine the percentage:

1. Between the mean and $10,000.
2. Between $7,800 and $9,000.
3. More than $9,500.
4. No more than $10,500.
5. At least $6,000.

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