The Equal-Variances Test Statistic Of $\mu _ { 1 } - \mu _ { 2 }$

question 28

True/False

The equal-variances test statistic of $\mu _ { 1 } - \mu _ { 2 }$ is Student t-distributed with n₁ + n₂ - 2 degrees of freedom, provided that the two sample sizes are equal.

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Definitions:

Arthropods

A diverse group of invertebrate animals with exoskeletons, segmented bodies, and paired jointed appendages, including insects, arachnids, and crustaceans.

Antheridia

Male reproductive structures in ferns, mosses, and some algae, which produce and release sperm.

Archegonia

Egg-producing structures, as in the moss life cycle.

Gametophyte

Haploid generation of the alternation-of-generations life cycle of a plant; produces gametes that unite to form a diploid zygote.