Which of the following could be described as a null hypothesis for testing the link between academic attainment of secondary school pupils studying for GCSEs and hours of independent study completed by each student?
A. The number of hours of independent study has no effect upon academic attainment.
B. The more hours of independent study completed, the greater the academic attainment.
C. The more hours of independent study completed, the lower the academic attainment.
D. Independent study improves academic attainment.
Answer: A
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a. woven cloth b. papyrus c. linen paper d. clay e. wood boards