Consider a level with $\displaystyle \alpha$ = 0.05 test of $\displaystyle H_0 : \theta > 0$ based on WRST.If our Data $\displaystyle Z_1,..,Z_n$ is a random sample from a normal distribution N(1.5,$\displaystyle 4^2$) how many observations n will we need to collect in order to have approximate power at 0.84.