Direction of rejection

Let $X_1,\dots ,X_6$ be a random sample from the gamma density f(x|$\lambda )=({\lambda }^4/6)$ $e^{-\lambda x}$ $x^3$ for $x>0,\lambda >0$ unknown. Let $T=\sum X_i$ and $\psi$ be the UMP test of size 0.05 for $H_0:\lambda =1$ against $H_1:\lambda >1$. With ${\chi }_{\nu ,\alpha }^2$ the $(1-\alpha )-$th quantile of ${\chi }_{\nu }^2$, the test $\psi$ rejects $H_0$ iff