What is H0? Choice Answers: 1. The mean of group 1 is not the same as the mean of group 2    2. The mean of group 1 is the same as the mean of group 2   3. The number of errors for 8 hours sleep deprivation is different than the number of errors for 24 hours sleep deprivation   4. The number of errors for 8 hours sleep deprivation is equal to the number of errors for 24 hours sleep deprivation   5. The number of errors for 8 hours sleep deprivation is not different than the number of errors for 24 hours sleep deprivation   6.The number of errors for 8 hours sleep deprivation is not equal to the number of errors for 24 hours sleep deprivation   7. The number of errors for 8 hours sleep deprivation is not the same as the number of errors for 24 hours sleep deprivation   8. The number of errors for 8 hours sleep deprivation is the same as the number of errors for 24 hours sleep deprivation

Null hypothesis or H₀  is nothing but the no association and no difference. It suggests that there is no statistical relationship between two variables of an experiment. Example of null hypothesis can be taken from an experiment of whether cats care about the color of the food that they are consuming. And the null hypothesis would be that cats do not express distinct interest or preference in the color of the food that they are given. It is a default hypothesis which measures to zero in quantity.