1.) After conducting a clinical trial to assess the effect of pharmaceutical eye drops (Eyezican) on glaucoma, researchers found an RR of 2.7 (95% CI, 0.1-4.4). The true association between the drops and glaucoma is actually RR = 1.3.

a. Discuss the results in the context of precision, validity, strength of association, and statistical significance. Then describe one element in the study that could be changed by researchers to increase precision.