In Constructing a 95% Interval Estimate for the Ratio of Two

question 33

Short Answer

In constructing a 95% interval estimate for the ratio of two population variances, $$\sigma _ { 1 } ^ { 2 }$$ / $$\sigma _ { 2 } ^ { 2 }$$ , two independent samples of sizes 30 and 40 are drawn from the populations. If the sample variances are 425 and 675, then the upper confidence limit is about: $$\begin{array} { | l | l | } \hline \text { A. } & 1.2215 . \\\hline \text { B. } & 0.3132 . \\\hline \text { C. } & 1.2656 . \\\hline \text { D. } & 0.3246 . \\\hline\end{array}$$

---

Definitions:

Mitral Valves

Heart valves located between the left atrium and left ventricle that allow blood to flow in one direction: from the atrium into the ventricle.

Ventricular Filling

The phase of the cardiac cycle during which the ventricles of the heart fill with blood from the atria.

Hypertension

A medical condition characterized by persistently high blood pressure.

Blood Cholesterol

A fatty substance present in the blood, essential for normal body function but high levels can lead to cardiovascular diseases.