Using the following data (the same values) and a subgroup size of 5:

Subgroup	Average	Standard Deviation
1	90	5
2	88	1
3	89	5
4	93	2
5	91	7
6	92	4
7	87	7
8	91	5
9	89	4
10	90	4

1. What is the value for UCL_x, LCL_x?

2. None of the above subgroups is out of control?