< back to Test Questions Math with Calculator: Question 24 24 The effectiveness of a mineral supplement in the soil on the growth of a particular species of plant is being studied. A botanist planted 1,000 seeds in a greenhouse so that the growing conditions for all seeds would be as identical as possible. The seeds were obtained from two 500-seed packages. The seeds from one package were planted in soil that had the supplement added, and the seeds from the second package were planted in soil that did not have the supplement added. How should the experiment be changed to allow the researcher to conclude whether the supplement has an effect on plant growth? View Answer v