A comparative experimental study has produced data from twi groups: a control group (no treatment) and treatment group. Assume that the sample statistic for each group is sample proportion. Which of the following hypothesis testing procedures would be best suited for this type of study?
A) z test statistic with two sample means
B) t test statistic with two sample means
C) z test statistic with two sample proportions
D) z test statistic with one sample proportion