6. Many families on Vancouver Island are using backyard structures for home offices, art studios, and hobby areas as well as for additional storage. Suppose that the mean price for a customized backyard structure is $3100 and that the standard deviation is $1200. Assume that the price distribution is a symmetric mound-shaped or bell-shaped distribution.

a) What is the z-score for a backyard structure costing $2300? Interpret this z-score

b) Can the price from part a) be considered an outlier? Justify your answer.