Out of 132 adults selected randomly from one town, 33 of them smoke.  Construct a 99% confidence interval to estimate the true proportion of all adults in that town who smoke. Indicate answers as a percent, rounded to one decimal place.   a. 15.3% < p < 34.7%   b. 18.8% < p < 31.2%   c. 17.6% < p < 32.4%   d. 16.2% < p < 33.8%

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2-Proportion Test

In a 2-proportion test, two separate proportions are measured at the same time, and their similarity is evaluated. It is also known as a 2-proportion z-test, and a comparison of two different proportions is done in this method.