The interest$-$rate$-$based transmission mechanism involves an initial change in monetary policy causing a change in excess reserves, a multiple change in the money supply, a change in the interest rate, a change in investment, and finally a multiple change in real GDP$.$ Explain the required increases or decreases that must occur in the transmission mechanism in order to yeid a desired increase in real GDP

The required change in monetary policy would be an open market $$ This initial policy action would bring about a $$ in excess reserves, a multiple $$ in the money supply, $$ in the interest rate $($and corresponding $$ in bond prices$),$ and $$ in investment. The increase in real GDP$.$