Areal estate agent has surveyed houses in twenty nearby zip codes in an attempt to put together a comparison for a new property that she would like to put on the market. the 1057 houses she surveyed have a mean price of $168 comma 900, with a standard deviation of $ 74 comma 150. the mean living area is 1722 sq ft, with a standard deviation of 531 sq ft. which is more unusual, a house in that market that sells for $350 comma 000 or a house that has 3500 sq ft of living area? explain.

Anew 2-lane road is needed in a part of town that is growing. at some point the road will need 4 lanes to handle the anticipated traffic. if the city's optimistic estimate of growth is used, the expansion will be needed in 4 years and has a probability of happening of 40%. for the most likely and pessimistic estimates, the expansion will be needed in 8 and 15 years respectively. the probability of the pessimistic estimate happening is 20%. the expansion will cost $ 4.2 million and the interest rate is 8%. what is the expected pw the expansion will cost?