X Yand Z are portfolios of securities. Data pertaining to these portfolios and the market portfolio are given in the follomng table: Porolio Std devERI-l Em) Betai CovER- R\") p m ? X 0. 23 ? 0. 015 Y 0.23 ? 1.5 ? 0.92 Z 0. 34 0. I 7 ? 0. 043 M ? 0J0 ? 0.02 Also (Z'ovggmliu)I= 0. 04 REQUIRED (a) calculate the rate of return on a risk e asset (B) Fill in the missing gures (indicated by question mark) (c) Chmparethelietasandstandarddeiiations ofX&. Y. Howdowuemlain thefact thatX has a lower beta than ert a much higher standard deviation? (d) Cbnsider portfolio P below. Without doing any caladations, what is its ' beta? Portfolio sigma-J Em.) beta: P 0.30 .125 ? (e) Ihe beta of a pory'olio coming of 60% of X and 40% of? 69 calculate E@) and the vawiance with the market of the porg'olio created in (e). (g) 15' the pory'olio in (e) e'icient? Show calculations (h) Without doing any calculations, what can you say about how efficient Pory'olio P is