When Testing for Differences of Means, the T-Statistic T = $\frac { \bar { Y } m - \bar { Y } w } { S E ( \bar { Y } m - \overline { \bar { Y } w } ) }$

question 11

Multiple Choice

When testing for differences of means, the t-statistic t = $\frac { \bar { Y } m - \bar { Y } w } { S E ( \bar { Y } m - \overline { \bar { Y } w } ) }$ , where $S E \left[ \bar { Y } _ { m } - \bar { Y } _ { W } \right) = \sqrt { \frac { s _ { m } ^ { 2 } } { n _ { m } } + \frac { s _ { w } ^ { 2 } } { n _ { w } } }$ has

• A)a student t distribution if the population distribution of Y is not normal
• B)a student t distribution if the population distribution of Y is normal
• C)a normal distribution even in small samples
• D)cannot be computed unless \(n _ { w }\) = \(n _ { m }\)

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Definitions:

Radial Pulses

The pulse felt at the wrist on the side where the radial artery is located, commonly used to measure heart rate.

Bounding

A term often used to describe a strong or forceful pulse indicating an increase in cardiac output or excitement.

Absent

Not present in a specified place at a given time; lacking.

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A type of ulcer caused by poor blood flow to the arteries, typically resulting in tissue damage and sometimes seen in limbs.