An analyst wishes to estimate the average house price to within an margin of error of $10,000. A pilot study of 150 houses produces a mean of $550,000 and a standard deviation of $ 150.000. What is the required sample size? (You may use the value 1.96 in your calculation, rather than the value from the t(n-1) distribution.) N 1.96 NB: the solution to m = 1.96 is DE In m