Question 127322
Suppose that X has a distribution with m=72 and s=8 (greek symbols)

if random samples of size n=16 are selected, can we say anything about the x distribution of sample means?
---------------------------------
According to the Central Limit Theorem the mean of the sample means equals
the population mean which is 72, and the standard deviation of the sample
means is 8/sqrt4) = 2 .
=================================

if the original x distrubution is normal can we say anything about the x distribution of random samples of size 16?
The sample means are normally distributed.
---------------------
Find P(68<x<73)
Question: Does "x" refer to population data or sample means?
In either case, find the z-values for 68 and 73; then find
The probability z lies between those two z-values.
==========================
Cheers,
Stan H.