Sample	Size	No. Defective
1	80	4
2	72	2
3	68	3
4	81	3
5	75	4
6	70	4
7	82	5
8	64	1
9	73	1
10	78	5
11	70	3
12	74	4
13	83	1
14	76	12
15	66	4
16	70	7
17	71	4
18	82	7
19	73	4
20	67	6
21	80	2
22	79	7
23	81	2
24	81	4
25	78	4
26	79	1
27	84	4
28	66	2
29	74	4
30	80	4

(a) use the data n the table to construct a standardized p-chart,

(b) interpret your chart, and

(c) give reasons for out-of-control conditions