What Effect Will Using a One-Tailed Test Over a Two-Tailed

question 44

Multiple Choice

What effect will using a one-tailed test over a two-tailed test have on power (presuming the true population difference is in the expected direction) ?

• A)it will increase power
• B)it will have no effect on power
• C)it will decrease power
• D)power cannot be calculated if a one-tailed test is used

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Definitions:

Potassium Levels

The concentration of potassium ions in the body, crucial for nerve function and muscle contraction.

Aldosterone

A hormone produced by the adrenal gland that helps regulate blood pressure by controlling sodium and potassium levels in the body.

ADH

Antidiuretic hormone, also known as vasopressin, a hormone that regulates the body's retention of water by increasing the concentration of water in the blood.

Urine Osmolality

A measure of the concentration of solutes in urine, which can provide insight into the body's water balance and kidney function.