Calculate the Appropriate Test Statistic $z = - 1.28$ B $z = - 2.67$

Short Answer

Calculate the appropriate test statistic.
-A report on the U.S. economy indicates that 28% of Americans have experienced
Difficulty in making mortgage payments. A news organization randomly sampled 400
Americans from 10 cities named the "fastest dying cities in the U.S." (Forbes Magazine,
August 2008) and found that 136 reported such difficulty. Does this indicate that the
Problem is more severe among these cities? The correct value of the test statistic for
Testing this claim is A. $z = - 1.28$
B. $z = - 2.67$
C. $z = 2.67$
D. $z = 1.96$
E. $z = - 1.28$