Which Hereditary Cause of Intellectual Disability Affects Male Children at a Rate

question 236

Multiple Choice

Which hereditary cause of intellectual disability affects male children at a rate of about 1 out of every 3800 males with up to three-fourths of individuals with this disorder also suffering from hyperactivity and attention disorders?

• A) hydrocephaly
• B) cretinism
• C) phenylketonuria (PKU)
• D) fragile X syndrome

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Definitions:

Two-Tailed

A statistical test where the critical area of a distribution is two-sided and tests whether a sample is either greater or less than a certain range of values.

Negative Number

A real number that is less than zero, indicating a direction opposite to positive numbers.

Null Hypothesis

A type of hypothesis used in statistics that proposes there is no statistical significance between two variables, or that a statement of no effect or no difference will be true.

Two-Tailed

In hypothesis testing, it refers to the methodology that considers both directions of a possible effect, allowing for investigation of deviations in two opposite directions from the null hypothesis.