You are given the following information regarding prices for a sample of stocks. a. Construct a price-weighted index for these three stocks, and compute the percentage change in the index for the period from T to T+1. Do not round intermed ate calculations. flound your answer to two decimal places. b. Construct a value-weighted index for these three stocks, and compute the percentage change in the index for the period from T to T+1. Do not round intermedate calculations. Round your answer to two decimal places