Electrical Engineers Are Attempting to Maximize the Efficiency of an Experimental

Multiple Choice

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