Is it possible for a firm to simultaneously earn above-normal economic returns and below average accounting returns? What about below-normal economic returns and aboveaverage accounting returns? Why...

Is it possible for a firm to simultaneously earn above-normal economic returns and below average accounting returns? What about below-normal economic returns and aboveaverage accounting returns? Why or why not? If this can occur, which measure of performance is more reliable: economic performance or accounting performance? Explain.