A Researcher Calculates a Mean from a Sample of 37 $\mu$

Multiple Choice

A researcher calculates a mean from a sample of 37 people. The following hypotheses are stated: H₀: $\mu$ = 40 and H₁: $\mu$ $\neq$ 40. For $\alpha$ = .05, what is an appropriate critical value for his statistic?

A) $\pm$ 2.00
B) $\pm$ 1.96
C) -1.65
D) -1.6