You are given the following information regarding prices for a sample of stocks. PRICE Stock Number of Shares TT + 1 $74 $86 2,600,000 13,000,000 30,000,000 45 30 21 27 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