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 are the LCL and the UCL for the $\bar { X }$
Chart?

A) [32.313,34.347]
B) [30.963,35.697]
C) [27.68,38,98]
D) [32.911,33.749]