Assume That the Universe for X Is All People and the Universe

question 159

Short Answer

assume that the universe for x is all people and the universe for y is the set of all movies. Write
the statement in good English, using the predicates $$S ( x , y ) : x \text { saw } y \quad L ( x , y ) : x \text { liked } y \text {. }$$ Do not use variables in your answer.
- $$\forall x \exists y L ( x , y )$$ In 127-136 suppose the variable x represents students, y represents courses, and T(x, y) means "x is taking y".

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Definitions:

Validity

The extent to which a test, measurement, or research accurately reflects or assesses the specific concept that it is intended to measure.

Constructability

A project management technique that reviews construction processes from start to finish during pre-construction phase to ensure efficient and feasible construction.

Predictive Validity

The extent to which a score on a scale or test predicts future performance on a related outcome.

Construct Validity

The degree to which a test or instrument measures the theoretical concept it is intended to measure.