The following information was obtained from matched samples taken from two populations. Assume the population of differences is normally distributed. 
The 98% confidence interval for the difference between the two population means is
Definitions:
Supergroup
A high-level taxonomic rank in biological classification above the level of kingdom, used in some classifications for organisms that are genetically distant.
Single Flagellum
A structure used by some cells for movement, consisting of a long, whip-like appendage that drives the cell forward.
Amoebas
A group of protozoan single-celled organisms with the ability to change shape, known for their movement via pseudopodia.
Two Or More Flagella
The characteristic of an organism having multiple flagella, allowing for enhanced mobility and interaction with its environment.
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