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Explanation: A p-value less than 0.05 typically indicates that the observed results are unlikely to occur under the null hypothesis. This threshold suggests that there is less than a 5% probability that the results are due to random chance, leading researchers to reject the null hypothesis in favor of the alternative. For example, in a t-test comparing means, a p-value < 0.05 would imply a significant difference between groups. However, it does not measure the magnitude of the effect or its practical significance, which requires further evaluation. Option A: A low p-value leads to the rejection of the null hypothesis, not its acceptance. Option B: The p-value does not represent the probability of the null hypothesis being true; it indicates the likelihood of the observed result under the null. Option D: A p-value < 0.05 signifies statistical significance, not insignificance. Option E: Sample size considerations are separate from interpreting p-values and do not affect the threshold for significance.
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