Suppose That the Following Is to Be Tested $\mathrm { H } _ { 0 } : \mathrm { p } = 0.35$

Multiple Choice

Suppose that the following is to be tested: $\mathrm { H } _ { 0 } : \mathrm { p } = 0.35$ and $\mathrm { H } _ { \mathrm { a } } : \mathrm { p } > 0.35$ . Calculate the observed $z$ -statistic for the following sample data: Forty out of eighty test subjects have the characteristic of interest. Round to the nearest hundredth.

A) $z = - 1.87$
B) $z = 1.88$
C) $z = - 0.94$
D) $\mathrm { z } = 2.81$