The population of SAT test scores in the United States is known to be normal. If we sample 20 student SAT scores, which of the following is true according to the central limit theorem?
- The sample distribution of the sample mean is normal, because the sample size is not large enough.
- The sample distribution of the sample mean is normal, because the sample size is large enough.
- The sample distribution of the sample mean is normal, because the population is normal.
-The sample distribution of the sample mean is not normal, because the sample size is not large enough.