One-Tailed vs Two-Tailed Hypothesis Tests | 2-sided vs lower and upper tails

This video explains the differences between one-tailed (right and left) and two-tailed hypothesis tests (directional vs. non-directional) proportion (p) template: https://youtu.be/TE52-_8-yQU z-test template: https://youtu.be/qmhB1Xtbap8 t-test template: https://youtu.be/ymusVe-F4T8 One-Sample Z-Test in Excel Using Summary Statistics: https://youtu.be/b0Erbf4n_gQ