The formula for pooled proportion in a two-sample test is pc = X1+X2n1+n2 Match the variables to their description. Drag and drop application. X1 X1 drop zone empty. X2 X2 drop zone empty. n1 n1 drop zone empty. pc pc drop zone empty. Number of observations in first sample. Pooled estimate of population proportion. Number of "successes" in second sample. Number of "successes" in first sample. Need help? Review these concept resources