1) A Methods and Measurements Analyst needs to develop a time standard for a certain task. The task involves use of a ruler, square, and portable electric saw to mark and cut the "notch" in a rafter (a standard carpentry task of home construction). In a preliminary study, he observed one of his workers performing this task five times. The observations were made in an air-conditioned, well-lit training facility, at ground level, with all tools and equipment clean and readily available. Show all mathematical work and explain how you reached each answer below.

Observation:	1	2	3	4	5
Task time (seconds):	82	74	80	88	76

(a) What is the actual average time for this task?

(b) What is the normal time for this task if the employee worked at a 10% faster pace than is typical for adequately trained workers?

(c) What is standard time for this task if allowances sum to 12%?

(d) If the analyst then thought more carefully about his experiment and decided that the allowances needed to be increased to match the real (outside, not air-conditioned) work environment, and that the proper allowance was not 12% but 20%, what is the revised standard time?