Update 2016-02-20

Update 2016-02-20: I computed the p-value wrong; 0.053 was from a one-tailed test instead of a two-tailed test. The right p-value is 0.108. (I had used an online calcalculator intended for evaluating A/B tests that give you conversion numbers. It didn't specify one- or two-tailed, but since two-tailed is what you should use for A/B tests that...