View Point Industries has forecast a rate of return of 20.00% if the economy booms (25.00% probability); a rate of return of 15.00% if the economy is in a growth phase (45.00% probability); a rate of return of 2.50% if the economy is in decline (20.00% probability); and a rate of return of 15.00% if the economy is in a depression (10.00% probability). What is View Points standard deviation of returns? (Do not round intermediate computations. Round your final answer to two decimal points.)