The mean and the standard deviation of housing price data are 389.30 and 112.21 (in thousands of dollars). Assuming that prices data comes from an approximately normally distributed population, use the three steps below to compute the 95% confidence interval. a) What is the ta/2 value? b) Compute the margin of error. Show the formula, work and the final answer. Round the answer to two decimal places. c) Compute the 95% confidence interval. Present the answer in the interval notation, (Lower bound, Upper bound). Round the answer to two decimal place