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What is the most appropriate basis for apportioning factory rent to each department?
Option A (Floor space) is correct.
Rent is a cost of occupying space โ floor space is the logical basis. Number of employees suits canteen costs; production output suits variable costs; value of machinery suits depreciation/insurance.
Sensitivity and Specificity Definitions:
| Measure | Formula | Meaning |
|---|---|---|
| Sensitivity | \(\frac{TP}{TP + FN}\) | % of true positives correctly identified (rules OUT disease if negative โ SnNOut) |
| Specificity | \(\frac{TN}{TN + FP}\) | % of true negatives correctly identified (rules IN disease if positive โ SpPIn) |
- 95% sensitivity: The tool correctly identifies 95% of patients who have the condition
- 60% specificity: Only 60% of those without the condition are correctly identified as negative โ meaning a high false positive rate (40%)
Correct SI unit pair:
Power: watt (J/s). Energy: joule; Force: newton; Velocity: m/s.
- Max electrons in a shell: \(2n^2\)
- Max electrons in a subshell: \(4\ell + 2\)
- Number of orbitals in a subshell: \(2\ell + 1\)
Which of the following statements regarding drawings is/are correct?
- They represent a decrease in the owner's investment in the business.
- They must always be less than the total profit for the year.
- They constitute the salary paid to the owner.
Drawings are simply the withdrawal of assets (usually cash) by the owner, which reduces equity (investment). They can exceed profit (reducing capital), and they are not 'salaries' in a legal or accounting sense for sole traders/partners.
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