One Model for the Spread of an Epidemic Is That $80 \%$

question 60

Short Answer

One model for the spread of an epidemic is that the rate of spread is jointly proportional to the number of infected people and the number of uninfected people. In an isolated town of 2,000 inhabitants, 130 people have a disease at the beginning of the week and 1,100 have it at the end of the week. How long does it take for $80 \%$ of the population to be infected?

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Definitions:

Between Assessment

An evaluation or analysis conducted to compare or distinguish differences or similarities among subjects at different times or conditions.

One-group Pretest-posttest Design

A research design where a single group of subjects is tested before and after a treatment to observe changes.

Pretest

An assessment given before a main intervention or treatment to establish a baseline measure of the participants' knowledge or skills.

Experimental Manipulation

The deliberate alteration of variables in an experimental setup to study its effects on the outcome.