问答题 假设政府管制变动，允许银行开始为支票账户支付利息。回想一下，货币存量是通货和包括支票账户在内的活期存款，因此，这种管制的改变会使持有货币更有吸引力。
   a．这种变动如何影响货币需求?
   b．货币流通速度会发生什么变动?
   c．如果美联储使货币供给保持不变。短期和长期产出与物价将发生什么变动?
   d．对这种管制变动，美联储的反应应该是保持货币供给不变吗?为什么是或为什么不是?
   Suppose that a change in government regulations allows banks to start paying interest on checking accounts. Recall that the money stock is the sum of currency and demand deposits, including checking accounts, so this regulatory change makes holding money more attractive.
   a．How does this change affect the demand for money?
   b．What happens to the velocity of money?
   c．If the Fed keeps the money supply constant, what will happen to output and prices in the short run and in the long run?
   d．Should the Fed keep the money supply constant in response to this regulatory change? Why or why not?