This question asks you to confirm the beta computations. Work with the data from Table 9.2.

(a) Compute the covariance between H and N.

(b) Compute the covariance between I and N.

(c) Compute the variance of N.

(d) Compute the beta of H with respect to N.

(e) Compute the beta of I with respect to N.

Repeat this for portfolio T as the reference portfolio instead ofN. (Recall that T holds 30% in H and 70% in I.)