A manufacturer is interested in the output voltage of a power supply used in a PC. Output voltage is assumed to be normally distributed, with standard deviation 0.25 volt, and the manufacturer wishes to test volts against volts, using units. In your intermediate calculations, use z-scores rounded to two decimal places (e. g. 98.76). Round your answers to four decimal places (e. g. 98.7654). (a) The acceptance region is . Find the value of . (b) Find the power of the test for detecting a true mean output voltage of 5.1 volts.