
123Experimental Design
4. Write down the hypotheses in a format that is testable through scientic research:
There are two types of hypothesis—null and alternative hypotheses. Correct for-
mation of null and alternative hypotheses is the most important step in hypoth-
esis testing. The null hypothesis is also known as hypothesis of no difference and
denoted as H
0
. The null hypothesis is the proposition that implies that there is no
statistically signicant relationship within a given set of parameters. It denotes the
reverse of what the researcher in his experiment would actually expect or predict.
Alternative hypothesis is denoted as H
a
. The ...