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The national average cost of daycare per year ranges widely. The average cost is $7200 per year with a standard deviation of $900. In a

The national average cost of daycare per year ranges widely. The average cost is $7200 per year with a standard deviation of $900.

In a different year, if the mean remained the same, but now the percentage of parents paying less than $4600 per year increased to 1.7%, what is the new standard deviation?

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