If 20 Samples of Size 7 Are Drawn,with $\overline { \overline X }$

Multiple Choice

If 20 samples of size 7 are drawn,with $\overline { \overline X }$

= 33.33 and $\bar { R }$
= 5) 65,what is the A-B upper boundary for the $\bar { X }$
Chart?

A) 35.697
B) 34.908
C) 34.347
D) 34.008