$4-$ The following data apply to Problems $4.$a through $4.$g: A pension fund manager is considering three mutual funds. The first is a stock fund, the second is a long$-$term government and corporate bond fund, and the third is a T$-$bill money market fund that yields a rate of $8\%.$ The probability distribution of the risky funds is as follows: $(3$ Points$)$

$\backslash$table$[[,$Expected Return,Standard Deviation$],[$Stock fund $(S),20\%,30\%$