Based on the sampling distribution of the means and the central limit theorem,the sample mean can be used as a good estimator of the population mean,assuming that the sample size,n,is sufficiently large.

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Quizplus · Accepted Answer

The central limit theorem ensures that as the sample size increases, the sampling distribution of the means approaches a normal distribution. This allows us to use the sample mean as an estimator for the population mean, as long as the sample size is sufficiently large. Specifically, if the sample size is greater than or equal to 30, the sample mean can be a good estimator of the population mean.

Based on the Sampling Distribution of the Means and the Central