- For \( \alpha = 0.01 \): \( \text{Fail to reject } H_0 \)
- For \( \alpha = 0.05 \): \( \text{Reject } H_0 \)
- For \( \alpha = 0.10 \): \( \text{Reject } H_0 \)
Thus, the answers are:
\[
\boxed{\text{(a) Fail to reject } H_0, \text{ (b) Reject } H_0, \text{ (c) Reject } H_0}
\]