Final answer:
The statement that a reliable test must also be valid is false because a test can be consistent (reliable) without accurately measuring what it is supposed to measure (valid). The term closest in meaning to 'hypothesis' is 'suggestion,' as both imply a proposed explanation that needs to be tested.
Step-by-step explanation:
If a test is reliable, then we can infer that it must also be valid. This statement is false. A test being reliable means that it consistently produces the same results under the same conditions. However, validity refers to how well a test measures what it is intended to measure. A test can be reliable without being valid. For example, a scale that is broken and always shows you are 10 pounds lighter is reliable in its consistency but not valid in measuring your true weight.
Reliability and validity are both critical in research and testing, but they do not imply each other.
Which of the following words is closest to the same meaning as hypothesis? The closest meaning to hypothesis would be suggestion (d). A hypothesis is a proposed explanation based on limited evidence, which can then be subjected to further investigation.
The role of hypothesis in the scientific method
Hypotheses must be testable and falsifiable to further scientific knowledge. The hypothesis serves as a starting point for experimentation.