Julia's Child Has Facial Deformities, a Smaller-Than-Normal Head, Intellectual Disability

question 33

Multiple Choice

Julia's child has facial deformities, a smaller-than-normal head, intellectual disability, learning difficulties, and delayed growth. If these defects can be traced to a teratogen used by Julia when she was pregnant, which was she most likely abusing?

• A) nicotine
• B) cocaine
• C) marijuana
• D) alcohol

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Definitions:

Two-Tailed Hypothesis

A form of statistical hypothesis testing where the alternative hypothesis specifies that the parameter of interest differs from the null hypothesis.

Population Mean

The average value of all the members of a set or population, denoting the central tendency.

Null Hypothesis

An assumption made for a statistical test that there is no significant difference or effect, to be tested against the alternative hypothesis.

Equality Sign

A symbol used in mathematics to indicate that two expressions on either side of the sign are equal in value.