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MNO2602-25-S2
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Which one of the following statements is true about random variation?
Bakealot Bakery monitors customer complaints to improve customer satisfaction. They collected data on certain problems and compiled the following check sheet:
Type of problem
|
Frequency
|
Wrong order delivered
|
10
|
No loyalty programme(s)
|
33
|
Unfriendly personnel
|
11
|
Not enough variety on menu
|
26
|
Pies, cakes or bread too expensive
|
20
|
What will be the cumulative percentage of the two leftmost bars of a Pareto chart?
Fruities & Veggies Market wants to monitor customer complaints, in order to improve customer satisfaction. The quality specialist collected the following data:
Type of Problem
|
Frequency
|
A: Wrong label on product
|
21
|
B: Product past its expiry date
|
9
|
C: Opening hours inconvenient
|
5
|
D: Unfriendly teller service
|
31
|
E: Vegetables frequently out of stock
|
14
|
Which of these type of problems need to be focused on according to a pareto chart?
Which of the following quality tools helps employees to not only focus on the symptoms of a
For the following numerical observations, calculate the class width for a histogram.
4
|
8
|
14
|
10
|
12
|
9
|
15
|
17
|
10
|
6
|
8
|
11
|
Which one of the following quality tools is used to examine the relationship between variables?
Consider figure 10.5 on page 244 of the prescribed book. Which of the following statements is true?
a)
b) The entire process ends when an action letter is issued.
c) There are two times when materials enter the process.
d) There are two decisions to be made.
e) When a submission is seen as complete, it goes to the front desk for a decision.
Determine the consumer’s risk for a sampling plan with a sample size of n = 50, c = 1 and LTPD = 8%, by making use of the table below: (Table 9A-2, p 233 of prescribed book.)
np
|
c
|
P(a)
|
0.5
|
1
|
0.93
|
2
|
0.98
| |
3
|
0.99
| |
1
|
1
|
0.75
|
2
|
0.92
| |
3
|
0.98
| |
2
|
1
|
0.48
|
2
|
0.70
| |
3
|
0.88
| |
3
|
1
|
0.20
|
2
|
0.48
| |
3
|
0.76
| |
4
|
1
|
0.10
|
2
|
0.30
| |
3
|
0.48
| |
5
|
1
|
0.09
|
2
|
0.18
| |
3
|
0.35
|
See Figure 9A-3 on page 232 of the prescribed book. For a sampling plan with N = 200, n = 5 and c = 2, determine the producer’s risk if the acceptable quality level is 3%.
Which of the following statements is correct?
a) The probability of rejecting a lot of good or acceptable quality is called the producer’s risk.
b) The probability of accepting a lot of acceptable quality is called the consumer’s risk.
c) The AQL is the maximum percentage of nonconforming/defective components allowed.
d) LTPD is the percentage of non-defective components (level of poor quality) historically experienced from a supplier.
e) An OC curve is a graphical method to assess the probabilities of acceptance for a shipment, given the quality of the shipment.