In a study of work, data has been collected on occasions in which an operator is idle or working on a production line and that comply with the sample size predefined by the analyst. These data are shown in Table 1.

Table 1

Work sampling data for the production line

Cycle	Operator	Operator
	idle	productive
1	0	9
2	1	8
3	5	4
4	2	7
5	4	5
6	3	6
7	0	9
8	2	7
9	1	8
10	2	7

En base a la informacin proporcionada, se le pide que determine el nivel de confianza para el estudio realizado si se ha estimado que el error es del 6%.