A Researcher Wants to Examine the Effect of Fertilizer and the Effect

question 26

Multiple Choice

A researcher wants to examine the effect of fertilizer and the effect of sunlight on the yield of tomatoes.She bought 60 tomato plants at a local garden store.She randomly assigned 30 tomato plants to be planted on the sunny side of the hill and 30 to be planted on the shady side.Within each group of 30 plants,she randomly assigned plants to one of three groups.The first group is grown with no fertilizer,the second group with a small amount of fertilizer,and the third group with a large amount of fertilizer.All tomato plants are planted at the same time and each plant is grown to maturity.The total weight of tomatoes obtained from each plant is recorded.The person evaluating the results does not know which tomatoes received fertilizer or which were grown on the sunny side.

• A)Single blind
• B)Double blind
• C)Neither

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Definitions:

Atrial Repolarization

The process by which the atria of the heart return to their resting state after being depolarized, typically not visible on an ECG due to its overlap with ventricular repolarization.

Ventricular Depolarization

A physiological process in the heart's ventricles where there is a rapid change in membrane potential, leading to contraction.

Electrocardiogram

A test that measures the electrical activity of the heart to detect heart problems and monitor heart health.

Heart Disease

Heart disease refers to a range of conditions affecting the heart, including coronary artery disease, arrhythmias, heart infections, and heart defects.