An Experiment Was Conducted to Compare the Mean Iron Content

Multiple Choice

An experiment was conducted to compare the mean iron content in iron ore pieces determined by three different methods: (1) mechanical, (2) manual, and (3) laser. Five 1-meter long pieces of iron
Ore were removed from a conveyor belt, and the iron content of each piece was determined using
Each of the three methods. The data are shown below. How should the data be analyzed?

A) 3 × 5 factorial design
B) randomized block design with three treatments and five blocks
C) completely randomized design with three treatments
D) randomized block design with five treatments and three blocks