Answer :
Final answer:
The mean of the sample means distribution for a normal population is equal to the population mean, so the answer is a) μ¯x=38.8
Option a.
Explanation:
The question concerns the sampling distribution of the sample means. With a normally distributed population having a mean μ¯x=38.8 and standard deviation ( μ¯x of 70.9, when drawing a random sample of size n=246, the mean of the distribution of sample means is equal to the population mean, according to the Central Limit Theorem. Therefore, the correct option would be a)a) μ¯x=38.8
Option a.