In Testing at the 5% Significance Level, a Sample

question 4

Multiple Choice

In testing at the 5% significance level, a sample of size 20 is used. In this case, what is the rejection region?

• A) -0.4500.450
• B) -0.3770.377
• C) 0.450 or-0.450
• D) 0.777 or-0.377

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Definitions:

Endangered Species

Organisms that are at risk of extinction due to drastic decreases in their population numbers or habitats.

Threatened Species

Species that are at risk of becoming endangered in the near future if conditions threatening their survival and reproduction do not improve.

Extinct Species

Species that have become extinct, ceasing to exist entirely.

Endangered Species

Species that are in danger of extinction throughout all or a significant portion of their range due to various factors like habitat loss, poaching, and climate change.