He half-life of a drug in the bloodstream is hours. What fraction of the original drug dose remains in hours? in hours? What fraction of the original drug dose remains in hours?
0.40
(Do not round until the final answer. Then round to the nearest hundredth as needed.)
What fraction of the original drug dose remains in hours?

I think the question is missing information, please edit, and what is the half-life of the drug?

Explanation:

paul revere would be your answer : )

this null effect is caused by a weak manipulation and ineffective internal validity. in a scientific study, as the one dr. morimoto is trying to perfom, internal validity refers to the confidence placed in the cause-effect relationship and to how well an experiment is done and able to eliminate confounding variables.