Answer:
2.34 mins
Explanation:
The regression equation in mathematical terms, shows the relationships between a dependent variable (reaction time) and one or more independent variables (exposure to a chemical level).
It also shows the effect of exposure to chemical on the reaction time.
The linear regression equation Y=2.3X-1.8 can be used to make predictions about about Y which is the reaction time for a given value of X which is the level of exposure to chemical.
From the question, X (level of exposure to chemical) is 1.8
The regression equation becomes
Y=2.3(1.8) - 1.8
Y= 4.4 - 1.8
Y= 2.34
There fore, the reaction time is 2.34 mins
