Six Sigma Black Belt Session 9
2025/2026 Exam Questions Marking
1
Scheme New Update | A+ Rated
A researcher believes that Drug A is more effective (has a larger mean)
than Drug B. What is an appropriate alternative hypothesis for any test he
may conduct (note: µ = mean)?
A) µ A > µ B
B) µ A - µ B > 0
C) µ B < µ A
D) All of the above
E) None of the above - 🧠 ANSWER ✔✔D) All of the above
What is the false rejection of the null hypothesis called?
A) Level of significance
B) Type I error
C) Level of confidence
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PRIVACY STATEMENT. ALL RIGHTS RESERVED
, D) Confidence interval
E) Type II error - 🧠 ANSWER ✔✔B) Type I error
2
The probability of obtaining a test statistic value at least as extreme as the
observed test statistic (computed from the sample) under the assumption
that the null hypothesis is true, is called the:
A) P-value
B) Level of significance
C) Type I error
D) Level of confidence
E) Type II error - 🧠 ANSWER ✔✔A) P-value
Which one of the following tests CANNOT be used with matched (paired)
samples?
A) Mann-Whitney-Wilcoxon test
B) Sign test
C) Wilcoxon Signed Ranks test
D) T-test - 🧠 ANSWER ✔✔A) Mann-Whitney-Wilcoxon test
COPYRIGHT©PROFFKERRYMARTIN 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE.
PRIVACY STATEMENT. ALL RIGHTS RESERVED
2025/2026 Exam Questions Marking
1
Scheme New Update | A+ Rated
A researcher believes that Drug A is more effective (has a larger mean)
than Drug B. What is an appropriate alternative hypothesis for any test he
may conduct (note: µ = mean)?
A) µ A > µ B
B) µ A - µ B > 0
C) µ B < µ A
D) All of the above
E) None of the above - 🧠 ANSWER ✔✔D) All of the above
What is the false rejection of the null hypothesis called?
A) Level of significance
B) Type I error
C) Level of confidence
COPYRIGHT©PROFFKERRYMARTIN 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE.
PRIVACY STATEMENT. ALL RIGHTS RESERVED
, D) Confidence interval
E) Type II error - 🧠 ANSWER ✔✔B) Type I error
2
The probability of obtaining a test statistic value at least as extreme as the
observed test statistic (computed from the sample) under the assumption
that the null hypothesis is true, is called the:
A) P-value
B) Level of significance
C) Type I error
D) Level of confidence
E) Type II error - 🧠 ANSWER ✔✔A) P-value
Which one of the following tests CANNOT be used with matched (paired)
samples?
A) Mann-Whitney-Wilcoxon test
B) Sign test
C) Wilcoxon Signed Ranks test
D) T-test - 🧠 ANSWER ✔✔A) Mann-Whitney-Wilcoxon test
COPYRIGHT©PROFFKERRYMARTIN 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE.
PRIVACY STATEMENT. ALL RIGHTS RESERVED
