Let (mu) denote the mean yield strength of a certain type of steel bar, in units of

Question:

Let $\mu$ denote the mean yield strength of a certain type of steel bar, in units of $\mathrm{mPa}$. A test will be made of $H_{0}: \mu \leq 250$ versus $H_{1}: \mu>250$. Three rejection regions are considered: (i) $\bar{X}>258.4$, (ii) $\bar{X}>261.9$, and (iii) $\bar{X}>256.5$. The levels of the tests are $0.10,0.05$, and 0.01 . Match each rejection region with its level.

Fantastic news! We've Found the answer you've been seeking!