Test Hypotheses About a Population Mean with Unknown
-Find the Standardized

question 51

Multiple Choice

Test Hypotheses about a Population Mean with Unknown
-Find the standardized test statistic t for a sample with $\mathrm { n } = 12 , \overline { \mathrm { x } } = 18.5 , \mathrm {~s} = 2.1$ , and $\alpha = 0.01$ if $\mathrm { H } _ { 1 } : \mu \neq 19$ . Round your answer to three decimal places.

• A) \(- 0.825\)
• B) \(- 0.008\)
• C) \(- 0.037\)
• D) \(- 0.381\)

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Definitions:

Osmoreceptors

Specialized cells in the body that detect changes in plasma osmolality and contribute to the regulation of body fluids.

Extracellular Fluid

The body fluid located outside the cells, which includes interstitial fluid, plasma, and transcellular fluid.

Aldosterone

A hormone produced by the adrenal glands that regulates sodium and potassium levels in the blood, thereby controlling blood pressure and the balance of fluids in the body.

Hypernatremia

Abnormally high plasma concentration of sodium ions.