In Testing the Hypotheses H₀ $\mu$ = 50 Vs H₁ $\mu$ $\neq$

question 164

Multiple Choice

In testing the hypotheses H₀: $\mu$ = 50 vs. H₁: $\mu$$\neq$ 50, the following information is known: n = 64, $\bar { x }$ = 53.5, and $\sigma$ = 10. The standardized test statistic z equals:

• A)1.96
• B)-2.80
• C)2.80
• D)-1.96

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Definitions:

Homogeneous Mixture

A mixture in which the composition is uniform throughout, such as solutions where the solute is completely dissolved in the solvent.

Sugar

A generic name for sweet-tasting, soluble carbohydrates, many of which are used in food.

Chromatography

A laboratory technique for the separation of a mixture by passing it through a medium in which the components move at different rates.

Evaporation

The process by which a liquid changes into a gas, typically below its boiling point, at the surface of the liquid.