Research Has Shown That Developmental Delay of Motor and Cognitive

question 34

Multiple Choice

Research has shown that developmental delay of motor and cognitive milestones in children is related to

• A)an increased count of white blood cells.
• B)decreased intake of lead and other minerals.
• C)increased levels of the growth hormone secreted by the pituitary gland to stimulate the body to grow.
• D)decreased levels of myelination.

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Definitions:

Directional Null Hypothesis

A null hypothesis that specifies the direction of the expected difference or relationship between two variables, which is not a standard form of null hypothesis and might be considered a misinterpretation, as null hypotheses typically state there is no effect or difference.

Directional Alternative Hypothesis

A hypothesis that specifies the direction of an expected difference or relationship, not just the existence of a difference.

Non-directional Alternative Hypothesis

A non-directional alternative hypothesis is a type of hypothesis used in statistical testing that predicts a relationship between variables without specifying the direction of the relationship.

Non-directional Null Hypothesis

A type of null hypothesis that specifies there is no specific direction of difference or relationship between variables.