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A mortgage company is checking to see the probability of homeowners defaulting on their adjustable rate mortgages. Foreclosure rate for that year was 1.14%. To

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A mortgage company is checking to see the probability of homeowners defaulting on their adjustable rate mortgages. Foreclosure rate for that year was 1.14%. To see if there's been any change, they are sampling 322 homeowners to see if they're in danger of defaulting on their mortgages. I need to compute the mean and standard deviation of phat for those who are in danger. The equations I have do not work. Please help

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