Find the Rejection Region for the Specified Hypothesis Test $\mathrm { H } _ { 0 } : \mu = 9$

Multiple Choice

Find the rejection region for the specified hypothesis test.
-Consider a test of $\mathrm { H } _ { 0 } : \mu = 9$ . For the following case, give the rejection region for the test in terms of the $z$ -statistic: $\mathrm { H } _ { \mathrm { a } } : \mu > 9 , \alpha = 0.01$

A) $| z | > 2.33$
B) $z > 2.33$
C) $z > 1.28$
D) $| z | > 2.575$