FALSE TRUE 69679 15994

limited unlimited 44700 45489

2-sample test for equality of proportions without continuity correction

data: total out of sample X-squared = 10.741, df = 1, p-value = 0.0005241 alternative hypothesis: greater 95 percent confidence interval: 0.004346171 1.000000000 sample estimates: prop 1 prop 2 0.1910834 0.1823573

1. Does the number of site visits by day 7 differ between the two posting models?give brief description.

FALSE TRUE 47493 38180

limited unlimited 44700 45489

2-sample test for equality of proportions without continuity correction

data: total1 out of sample1 X-squared = 2.7549, df = 1, p-value = 0.04848 alternative hypothesis: greater 95 percent confidence interval: 5.079859e-05 1.000000e+00 sample estimates: prop 1 prop 2 0.4484884 0.4428512

2 Does 1-day retention differ between the two posting models?give brief description.