When the World's Population Reached 6 Billion in 1995, It

question 53

Multiple Choice

When the world's population reached 6 billion in 1995, it was forecast that at a steady rate of growth the population would reach 12 billion in approximately 45 years. That period of 45 years is known as

• A) doubling time.
• B) doubling life expectancy.
• C) double increase rate.
• D) double overpopulation.
• E) double demographic transition.

---

Definitions:

Paired-Difference Experiment

A study design where the subjects are paired up based on certain criteria, and differences within each pair are studied.

Wilcoxon Signed-Rank Test

A non-parametric test used to compare two related samples, matched samples, or repeated measurements on a single sample to assess whether their population mean ranks differ.

Large-Sample Z-Test

A statistical hypothesis test used when the sample size is large, generally over 30, utilizing the standard normal distribution.

Test Statistic

A value, derived from sample data, used in hypothesis testing to determine whether to reject the null hypothesis.