Virginia College promotes a wide variety of executive training courses for firms in the Arlington, Virginia, region. Director Wendy Tate believes that individually written letters add a personal touch to marketing. To prepare letters for mailing, she conducts a time study of her secretaries. On the basis of the observations shown in the following table, she wishes to develop a time standard for the whole job. The college uses a total allowance factor of 12%. Tate decides to delete all unusual observations from the time study. What is the standard time?
|
Element
|
Observations (Minutes)
|
Performance Rating (%)
|
|
1
|
2
|
3
|
4
|
5
|
6
|
|
Typing letter
|
2.5
|
3.5
|
2.8
|
2.1
|
2.6
|
3.3
|
85
|
|
Typing envelop
|
.8
|
.8
|
.6
|
.8
|
3.1a
|
.7
|
100
|
|
Stuffing envelope
|
.4
|
.5
|
1.9a
|
.3
|
.6
|
.5
|
95
|
|
Sealing, sorting
|
1.0
|
2.9b
|
.9
|
1.0
|
4.4b
|
.9
|
125
|