In hypothesis testing the null hypothesis, often written H0, is usually the thing you would like to show is false. For example, that your updated interface design has not made any improvement.
Also used in hcistats2e: Chap. 6: pages 66, 67, 68, 69, 70, 71; Chap. 7: pages 75, 84; Chap. 8: pages 93, 94, 95; Chap. 9: page 105; Chap. 13: page 149
Also known as: H0