you are designing a study to determine the impact of feeding oily fish for six months on the IQ increase of children. the objective of the study is to determine whether children who eat oily fish for six months will show a higher IQ increase than children who have not. In other words with the experiment design, you will be measuring whether the IQ increase of children fed oily fish will deviate from the mean, assumed to be the normal condition.

what is the Null and Alternative Hypothesis?