You are given the following information regarding prices for a sample of stocks. PRICE Stock Number of Shares T 7+1 A 3,900,000 $78 $96 BC 14,000,000 24 34 30,000,000 22 33 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 intermediate calculations. Round 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 intermediate calculations. Round your answer to two decimal places. %