Given variance-covariance below.. Given variance-covariance below: 24 ??10 25 Z = ??10 75 32 25 32 12 a) Calculate the variance of an equally weighted

Given variance-covariance below.. Given variance-covariance below: 24 â??10 25 Z = â??10 75 32 25 32 12 a) Calculate the variance of an equally weighted portfolio. b) Calculate the covariance of a por...