In Testing the Hypotheses H₀ $\mu$ = 50 VsH₁ $\mu$ $\neq$ 50,the Following Information Is Known: N = 64

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