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In order to apply central limit theorem the sample size should be : |
equal to 30 less than or equal to 30 more than 30 more than or equal to 30 |
more than or equal to 30 |
The correct answer is Option (4) → more than or equal to 30 A commonly used rule of thumb is that the sample size should be at least 30 $(n≥30)$. |
