A regression to predict the mean selling house price was estimated using a random sample of 42 recently-sold houses. The explanatory variables were square footage the house, lot size, number of bathrooms and whether or not it was close to green space. The sum of squares error from the regression was 250. Compute the multipl standard error of estimate. Round to ONE decimal place.

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Q: 1/4 + 1/2 + 3/8 =

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