In Testing the Hypotheses H₀ $\mu$ = 50 Vs H₁ $\mu$ $\neq$

Multiple Choice

In testing the hypotheses H₀: $\mu$ = 50 vs. H₁: $\mu$$\neq$ 50, the following information is known: n = 64, $\bar { x }$ = 53.5, and $\sigma$ = 10. The standardized test statistic z equals:

A) 1.96
B) -2.80
C) 2.80
D) -1.96