best critical region for testing Ho : theta = 1 against H1 : theta= 2? \text { a) } \bar{x}>c \text { b) }|\bar{x}| \geq c \text { c) } \sum_{i=1}^{n}\left|x_{i}\right| \geq c \text { d) } \sum_{i=1}^{n}\left|x_{i}\right| \leq c

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