Decide Whether Each of These Statements Is True (T) or False

question 4

Multiple Choice

Decide whether each of these statements is True (T) or False
For a spring, which obeys Hooke's law, when it is stretched to give an extension of x:
(i) The work done in giving this extension is Fx
(ii) The work done in giving this extension is the product of the stress and strain.

• A) (i) T (ii) T
• B) (i) T (ii) F
• C) (i) F (ii) T
• D) (i) F (ii) F

---

Definitions:

One-tailed Hypothesis

A hypothesis that specifies the direction of an expected difference or relationship, testing for the possibility of an effect in one direction only.

Two-tailed Hypothesis

A hypothesis test that considers both directions of effects by investigating the possibility of a relationship in two ways, either greater than or less than.

Valid Hypothesis

A scientifically grounded assertion that can be tested through empirical research or experimentation to be either supported or refuted.

Research Hypothesis

A specific, testable prediction about the expected outcome in a study, often indicating a predicted relationship between variables.