A Two-Tailed Test Is Performed at the

question 27

Multiple Choice

A two-tailed test is performed at the .05 level of significance.The p-value is determined to be .09.The null hypothesis

• A) must be rejected.
• B) should not be rejected.
• C) could be rejected, depending on the sample size.
• D) has been designed incorrectly.

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Definitions:

Flagellated Cells

Cells possessing one or more flagella, which are long, whip-like structures that can propel the cells through liquid environments.

Red Algae

A large group of algae known for their reddish color, which is caused by phycoerythrin; they are mostly marine and play a role in coral reef ecosystems.

Serial Endosymbiosis Hypothesis

A theory suggesting that the organelles of eukaryotic cells, such as mitochondria and chloroplasts, originated as symbiotic relationships between separate prokaryotic organisms.

Purple Bacteria

A group of photosynthetic bacteria that utilize bacteriochlorophyll for energy, contributing to the sulfur cycle in some aquatic environments.