Anyone help me with question 20 plz! 30 POINTS!!

a. Independent Variable (I) = Tissue

Dependent Variable (D) = Absorption rate

b. I = Students

D = Reaction time

c. I = Bread

D = Cooking time

Explanation:

In an experiment , the variable being manipulated by an experimenter is known as an independent variable while the dependent variable is the event expected to change when the independent variable is manipulated.

a. Kleenex tissues are more absorbent than homebrand tissue.

In a study measuring the rate of absorption of tissues, the Independent Variable would be the tissue either Kleenex or Homebrand tissue while the rate of absorption or it's absorbent ability is Dependent Variable.

b. Students who plays sport have a faster reaction time than students who do not play sport.

In a study to determine the reaction time of different students with respect to sport, the students is the Independent Variable while the frequency of their reaction is Dependent Variable.

c. White bread cooks faster than multigrain bread.

The cooking time varies with the type of bread. Here the bread is the Independent Variable while the time to cook is Dependent Variable.