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In a random sample of 80 records, 12 are incomplete. Using the sample proportion, how many incomplete records would be expected among 600 similar records?
  1. 88
  2. 90
  3. 92
  4. None of these
Explanation

Sample proportion = 12/80 = 0.15 = 15%

Expected in 600 = 600 × 0.15 = 90


Last verified on 20-10-2026

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