An investor considers two portfolios: $1)$ Portfolio A with a return of $13\mathrm{.}7\%$ and a standard deviation of $8\%$ and $2)$ Portfolio B with a return of $7\%$ and a standard deviation of $3\%.$ Assuming the correlation between A and B is $0\mathrm{.}5$ and he invests $60\%$ in A and $40\%$ in B$,$ what range of returns should this portfolio produce $95\%$ of the time?