A Study Finds a Correlation Coefficient of R =

question 63

Multiple Choice

A study finds a correlation coefficient of r = .52 and reports p < .05. The p value indicates which of the following?

• A)The correlation is negative.
• B)The correlation is unlikely to have come from a zero association population.
• C)The correlation is not statistically significant.
• D)The effect size is large.

Calculate and interpret the test statistic for hypothesis tests involving a single population mean, a single population proportion, and the difference between two population means or proportions.

Determine sample sizes needed for estimating population parameters within a specified margin of error.

Formulate null and alternative hypotheses for testing differences between population means and proportions.

Understand and apply the concept of p-values in hypothesis testing to make informed decisions.

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Definitions:

Mineralcorticoid

A class of corticosteroids that are involved in maintaining electrolyte balance and water balance in the body.

Aldosterone

Hormone secreted by the adrenal cortex that regulates the sodium and potassium ion balance of the blood.

ADH

Antidiuretic Hormone, also known as vasopressin, a hormone that helps regulate the body's balance of water by reducing the amount of water excreted in urine.

ACTH

Adrenocorticotropic hormone, a polypeptide tropic hormone produced and secreted by the anterior pituitary gland that stimulates the adrenal cortex.