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No, a sample size of 30 is not strictly required. The video clarifies that $n \ge 30$ is merely a conservative rule of thumb.

Conditions: The discussion addresses the common $n \ge 30$ heuristic.; The video demonstrates CLT applicability with $n=20$.; The population distribution is not extremely skewed or heavy-tailed.

No, a sample size of 30 is not strictly required. The video clarifies that $n \ge 30$ is merely a conservative rule of thumb.

Conditions: The discussion addresses the common $n \ge 30$ heuristic.; The video demonstrates CLT applicability with $n=20$.; The population distribution is not extremely skewed or heavy-tailed.