最新的IASSC ICBB免費考試真題

問題1

Following process modifications, the Null Hypothesis states that no improvement to the process has occurred. If we discover the Null Hypothesis Test was rejected when it was false that would be a(n) ________________________.

A. Type II Error

B. Type III Error

C. Type I Error

D. Alpha Error

正確答案: A

問題2

A Belt working in a supply chain environment has to make a decision to change suppliers of critical raw materials for a new product upgrade. The purchasing manager is depending on the Belt's effort requiring that the average cost of an internal critical raw material component be less than or equal to $4,200 in order to stay within budget. Using a sample of 35 first article components, a Mean of the new product upgrade price of $4,060, and a Standard Deviation of $98 was estimated. The Alternative Hypothesis in the above example is?

A. The Standard Deviation is equal to $300

B. The Mean is greater than $ 4,200

C. The Mean is less than $4,320

D. The Mean is less than $4,200

E. The Mean is equal to $4,060

正確答案: B

問題3

SPC Charts are used extensively in different business and decision-making environments. In this example a vendor is being selected based on speed of delivery. Which of the conclusions would help you pick a vendor for your needs regarding lead-time of delivery from your vendors? (Note: There are 4 correct answers).

A. Vendor B has higher lead time, but a process with much narrower Control Limits

B. Vendor A with a much shorter lead time in delivery

C. Vendor B since the Control Limits are much narrower than Vendor A

D. Vendor B as it has a better consistency (lower variance) on lead time

E. Vendor B since Vendor A shows a situation out of control as shown in red

正確答案: A,C,D,E

問題4

When doing Hypothesis Testing on Non-normal data Belts will use a ________________ to compare more than two sample proportions to each other.

A. Sakami Table

B. Z score Table

C. Contingency Table

D. Mean-to-Mode Analysis

正確答案: D

問題5

Situations where standardized work needs to be incorporated include all of these except _____________________.

A. Process flow for the same product assembly taking various cycle time for completion

B. Lack of a system to assure proper inventory levels at repair stations

C. Machines continually operating to reduce the labor cost per piece

D. Changeover instructions incomplete

正確答案: C

問題6

The Greek letter "sigma" is used by mathematicians to signify _____________.

A. Standard Deviation

B. Data Spread

C. Curve Width

D. Numerical Average

正確答案: A

問題7

For the data shown here which statement(s) are true? (Note: There are 2 correct answers).

A. With greater than 95% confidence, we conclude the samples are from Non-normal Distributions

B. If we wanted to compare the Central Tendencies of all three samples we could use the Mann-Whitney test

C. If we wanted to compare the Central Tendencies of these three samples we could use Mood's Median test

D. With 95% confidence, we cannot conclude if the samples are from three Normal Distributions

E. If we wanted to compare the Central Tendencies of these three samples we would use the one way ANOVA test

正確答案: A,C

問題8

The _______ is the most frequently occurring value in a distribution of data.

A. Mode

B. Center Point

C. Median

D. Mean

正確答案: A

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