Electrical engineers are attempting to maximize the efficiency of an experimental battery cell.They wish to determine the optimum charge rate that will provide maximum battery capacity.They sample 50 cells and randomly assign five different charge rates to the sample (10 cells for each charge rate).All cells are then discharged at the same rate with total battery capacity for each cell recorded in amp-hours.This is an example of a(n)_____ study.
A) simple random
B) experimental
C) observational
D) probability

Question

Quizplus · Accepted Answer

This is an experimental study where the electrical engineers are intentionally manipulating the charge rate to determine its effect on battery capacity. The random assignment of charge rates to different cells helps to control for potential confounding variables and increase internal validity. The sampling of 50 cells also suggests that the study has a sufficient sample size to yield meaningful results.

Electrical Engineers Are Attempting to Maximize the Efficiency of an Experimental