From a population containing 30 units, 5 units are drawn by simple random…
2021
From a population containing 30 units, 5 units are drawn by simple random sampling without replacement. The probability that a specified unit is included in the sample is –
- A.
1
- B.
1/6
- C.
1/5
- D.
1/30
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Correct answer: B
In simple random sampling without replacement, the probability of a specified unit being included in the sample is calculated as the ratio of sample size to population size. With a sample size of 5 and a population of 30, the probability is 5/30, which simplifies to 1/6.