Answer:
The Null hypothesis is a claim the researcher is trying to disprove. (I think)
Step-by-step explanation:
The null hypothesis states that there is no relationship between the two variables being studied (one variable does not affect the other). It states results are due to chance and are not significant in terms of supporting the idea being investigated.
Set up the equation it's equavilvent to the same side of the other one
x-1=6
+1=+1
x=7
This is false because on 2) x does not equal 3.