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2021 Sep CSSBB test questions
Q131. SCENARIO
A Six Sigma team is measuring the moisture content of corn starch as it leaves the conveyer belt of a dryer. They collect one sample four cups of starch at times indicated in the chart at fixed locations labeled A, B, C, and D across the end of the belt. See the diagram below.
Which type of variation dominates?
A. within sample
B. sample to sample within the hour
C. hour to hour
D. none of the above
Answer: B
Q132. A quality leader who did extensive work with Japanese industry is:
A. Juran
B. Ishikawa
C. Deming
D. Ohno
E. Taguchi
F. all of the above
G. none of the above
Answer: F
Q133. A population is bimodal. One hundred samples of size 30 are randomly collected and the 100 sample means are calculated. The distribution of these sample means is:
A. bimodal
B. approximately exponential
C. approximately Poisson
D. approximately normal
E. approximately uniform
Answer: D
Update CSSBB actual test:
Q134. A control chart is to be used to display the number of non-conducting diodes. Each point on the chart represent the number of bad diodes in a box of 1000. The appropriate control chart to use is:
A. x-bar and R
B. median
C. individual and moving range
D. p
E. np
F. u
G. c
Answer: E
Q135. SCENARIO
A Six Sigma team is measuring the moisture content of corn starch as it leaves the conveyer belt of a dryer. They collect one sample four cups of starch at times indicated in the chart at fixed locations labeled A, B, C, and D across the end of the belt. See the diagram below.
A. y = 10.8 – 2.9x
B. y = 12.9 + 5.2x
C. y = 16 – 3.7x
D. y = 8.75 – 2x
E. y = 22.6 – 4.8x
Answer: D
Q136. α= 0.05
A sample of size 50 from machine A has a mean of 18.2 and standard deviation 3.1. A sample of size 40 from machine B has mean 17.6 and standard deviation 2.8. Do these data indicate that the population for machine A has a larger mean? Assume the populations are normal.
A. yes
B. no
Answer: B