Question

following results:

Observation	1	2	3	4	5	6
Time (secs)	113	124	119	113	119	120

What is the normal time for this task if the employee worked at a 34 percent faster pace than average?

(Keep one decimal place in your answer)

Your Answer:

Question 31 options:

Answer

Question 32 (6 points)

The owner of Kat Motel wants to develop a time standard for the task of cleaning a cat cage. In a preliminary study, she observed one of her workers perform this task six times, with the following results:

Observation	1	2	3	4	5	6
Time (secs)	117	124	116	129	111	126

What is the normal time for this task if the employee worked at a 38 percent faster pace than average and an allowance of 10 percent of the workday is used?

(Keep one decimal place in your answer)

Your Answer:

Question 32 options:

Answer

A design engineer gives you the following data for your standard product. You know from numerous previous samples that its reliable life is normally distributed with a mean of 335 days and a standard deviation of 19.2 days.

On a recent production run, she tested the duration of random samples with these results:

Sample 1	Sample 2	Sample 3	Sample 4
335.5	338.5	330.0	317.0
338.5	349.5	339.4	346.5
347.7	355.8	327.0	345.9
309.8	344.4	323.2	317.5

What is the sample mean service life for sample 2? (Keep one decimal place)

Your Answer:

Question 35 options:

Answer

Answer 1

31. Average observed time = (113+124+119+113+119+120) / 6 =708/6 =118 seconds

Performance rating when worker works fast = 1+Fast%age = 1+34%=1.34

Normal time = Average observed time * Performance rating = 118 * 1.34 =158.1

32.

Average observed time = (117+124+116+129+111+126) / 6 =723/6 =120.5 seconds

AFday = 1/ (1-10%) = 1.11

Normal time = Average observed time * Performance rating* AFday = 120.5* 1.38*1.11 =184.6

Note - If you take AFday as 1.1, the answer will vary slightly, = 182.9 seconds.

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