In a Random Sample of 20 Patients Who Visited the Emergency

question 4

Essay

In a random sample of 20 patients who visited the emergency room of hospital 1, a researcher found that the variance of the waiting time (in minutes) was 128.0. In a random sample of 15 patients in the emergency room of hospital 2, the researcher found the variance to be 178.8.
Estimate with 95% confidence the ratio of the two population variances.

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Definitions:

Bread Flour

A type of flour with a higher protein content than all-purpose flour, designed specifically for baking bread, providing the necessary gluten structure for a good rise.

Protein

Large biomolecules consisting of one or more long chains of amino acid residues, crucial for almost all biological processes.

Electrochemistry

The branch of chemistry that deals with the relationship between electrical properties and chemical reactions, including the study of batteries and electroplating.

Platinum

A dense, malleable, and highly unreactive metallic element with symbol Pt and atomic number 78, used in jewelry, vehicle emission control devices, and as a catalyst.