Question 1159472
Ho: mu=11%
Ha: mu NE 11%
alpha=0.05 P{reject Ho|Ho true}
test statistic is a z
critical value is |z|>1.96
one sample proportion with xbar=37/167=0.2216
z=(0.2216-0.11)/sqrt(0.11*0.89)/167
=0.1116/0.0242
=4.61
strongly reject Ho and conclude the true proportion is not 0.11. 
p<0.0001 (4.08 x 10^(-6), although when it is this small, <.0001 is sufficient