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Q. Residents of a small town have savings that are normally distributed with a mean of $3000 and a standard deviation of $500. What percentage

Q. Residents of a small town have savings that are normally distributed with a mean of $3000 and a standard deviation of $500.
What percentage of townspeople have savings greater than $3200 ?

Find the domain of the following function. f(x,y) = cos y+6

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