Explain and discuss why engineers usually want the minimum variance unbiased estimator (mvue). what benefits are achieved by using the mvue in making engineering decisions, and what risks or impacts might be seen if another estimator is chosen at times? try to use hypothetical examples to illustrate your thinking.

Water at 70°f and streams enter the mixing chamber at the same mass flow rate, determine the temperature and the quality of the exiting stream. 0 psia is heated in a chamber by mixing it with saturated water vapor at 20 psia. if both streams enters the mixing chamber at the same mass flow rate, determine the temperature and the quality of the existing system.