An agricultural scientist is conducting an experiment to investigate whether a new organic liquid fertilizer, "BioGrow-X", increases the growth of tomato plants (Solanum lycopersicum).
One group of 30 tomato plants (Group A) is watered weekly with standard tap water. A second group of 30 tomato plants (Group B) is watered weekly with a 5% concentration of BioGrow-X liquid fertilizer. After a period of 8 weeks, the height of each plant is measured in centimeters.
Write an appropriate directional (one-tailed) hypothesis for this experiment.
689 exam-style questions on AQA A Level Psychology Scientific processes. Each one has a worked solution and a mark scheme showing where the marks go.