2) A poultry farmer experimented with four different lights to determine their comparative effect on the number of eggs produced by his chickens. The farmer had been informed by others farmers that different colors affected the production of eggs differently so he set up the experiment for different groups of chickens using green light, blue light, red light, and compared their effects to the white light he used traditionally. At the end of the 6-month experiment, he compared the number of eggs produced in each condition in order to determine the best light he must use to get the highest yield of eggs.

c) independent variable in this study?

d) dependent variable?

e) experimental conditions are there in this study?

f) What statistical test would the researcher have to use for data analysis?