Minutes per day Before and after disabling most notifications. (p = 0.007) 150 - 100 - Minutes / day 74.9 61.4 50 - 0 . Enabled Disabled Notifications If I wanted to test if the difference in the amount of time spend on a smart phone under two different conditions (people who have Enabled Notification vs. people who have Disabled Notifications), which test should I use? One Sample t-test, two-tail O Independent samples t-test, two-tail O Independent samples t-test, one-tail O One Sample t-test, one-tail