Based on a careful work study in the Hofstetter Corp., the results shown in the

Question

Based on a careful work study in the Hofstetter Corp., the results shown in the following table have been observed:

* Photocopying machine broken; included as delay in the allowance factor

^ Power outage; included as delay in the allowance factor

The allowance factor for this type of work is given to be 15 %.

(Round all intermediate calculations to two decimal places before proceeding with further calculations.)

The normal time for the "prepare daily reports" operation = ___ minutes

normal time for the copy results = __ minutes

normal time for the label and package reports = __ minutes

normal time for the distribute reports = __ minutes

The number of observations that are required for a 95% confidence level within 5% accuracy? = ___

Observation (minutes per cycle) Performance Rating 120 % 110% 85% 85% Element 41 40 12 40 Prepare daily reports Photocopy results Label and package reports Distribute reports 36 12 4 16 34 37 4 21 19 17 46

Explanation / Answer

Normal time (NT) =Observed time*Performance rating

Standard time = Normal time*Allowance factor

Observed time (OT) = Sum of recorded time/Number of observation

a) OT = (36+40+34+41+40)/5 = 191/5 = 38.2

NT = 38.2*120% = 45.84

b) OT = (12+11+15+12)/4 =12.5 (machine breakdown excluded)

NT = 12.5*110% = 13.75

c) OT = (4+2+4+6+5)/5 = 4.2

NT = 4.2*85% = 3.57

d) OT = (16+19+21+17)/4 = 18.25 (Power outage removed)

NT = 18.25*85% = 15.51

Related Questions

Navigate

• Browse (All)
• Browse B
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.