Let u denote the mean yield strength of a certain type of steel bar, in units of mPa. A test will be made of Ho:µs 250 versus H1 : µ > 250. Three rejection regions are considered: (i) X > 258.4, (ii)...

Extracted text: Let u denote the mean yield strength of a certain type of steel bar, in units of mPa. A test will be made of Ho:µs 250 versus H1 : µ > 250. Three rejection regions are considered: (i) X > 258.4, (ii) X > 261.9, and (iii) X> 256.5. The levels of the tests are 0.10, 0.05, and 0.01. Match each rejection region with its level.