Summary by ur own words

Null Hypothesis Experiments state a null hypothesis, which is the experimental hypothesis. A -. null hypothesis is a statement saying that there is little to no difference between the samples tested in the experiment (Coolican, 2004). The sample null hypothe sis is "if the null hypothesis is true there would be little difference between the scores on the XYZ math test between girls learning mathematics in groups and girls learning mathematics alone". It is best not to say that there will be no differ- ence between the tested samples because a null hypothesis makes no specific pre- diction (Coolican, 2004). The null is the experimental hypothesis because all science experiments work on probability. Researchers try to reject the null within a reasonable margin of error. There is no proof that scientific theories are 100% crue. The largest level of acceptable error in the social sciences is 5%. Inferential tests examine if the null can be rejected, not if the research hypothesis is true. The null hypothesis is not the opposite of the experimental hypothesis