Define the alpha level and the critical region for a hypothesis test

The alpha-level is the probability that it will be rejected. The critical region is the set of z-values that lead to rejection of it.

Explanation:

i think it because equal matrices have equal dimensions, only square matrices can be symmetric. for all indices and . every square diagonal matrix is symmetric, since all off-diagonal elements are zero. in linear algebra, a real symmetric matrix represents a self-adjoint operator over a real inner product space.

d eras and periods