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1 markPaper 1 · Multiple choiceSampling Distribution and Estimation

CAPE Applied Mathematics Unit 1 · 2015 · Paper 1 · Question Q45

To construct a confidence interval for the population proportion, p, which of the following must be true for a sample of size n?

  1. (A)np > 5 and n(1 - p) > 5
  2. (B)np > 5 and n(1 - p) < 5
  3. (C)np < 5 and n(1 - p) > 5
  4. (D)np < 5 and n(1 - p) < 5

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