A Paleontologist Finds a Fragment of a Fossilized Vertebrate That

question 126

Multiple Choice

A paleontologist finds a fragment of a fossilized vertebrate that indicates that the adult animal had a four-chambered heart arranged in a single circuit.The animal could have been a(n)

• A) fish.
• B) amphibian.
• C) crocodile.
• D) bird.
• E) mammal.

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Definitions:

Independent Trials

Refer to experiments or trials in which the outcome of any single trial does not affect the outcomes of any other trials.

Null Hypothesis

A statistically formulated assertion that posits no relationship or difference between two or more groups or factors, serving as a default position until evidence suggests otherwise.

Chi-Square Test Statistic

A value derived from the chi-square test, representing the sum of the squared differences between observed and expected frequencies divided by the expected frequencies.

Goodness-Of-Fit Test

A statistical test used to determine how well observed sample data fit a distribution from a population with a normal distribution.