Find sufficient statistics for the parameters of interest: (a) $X_{1}, \cdots, X_{n} \stackrel{i i d}{\sim} $ Uniform $\left(\theta_{1}, \theta_{2} ight)$. (b) $X_{1}, \cdots, X_{n} \stackrel{i i d}{\sim) N\left(0, \sigma^{2} ight) $. SP.PC.0651