CAPE Applied Mathematics Unit 1 · 2017 · Paper 1 · Question Q23
Items 22--23 refer to the following information. Ten per cent of bulbs produced by a factory are defective. A sample of 400 bulbs is taken. The variance for the distribution of defective bulbs is
- (A)36.0
- (B)20.0
- (C)6.0
- (D)3.6
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