10 free CSSGB practice questions in the real exam format, covering the official content areas, with an explanation for every answer.
CSSGB Practice Test 9Tutor mode
Question 1 of 10
Analyze Phase
Eight loan processors at a bank each processed one standard file using the old checklist and one using a new checklist. The time saved per processor (old − new) has d̄ = 4.5 minutes and s_d = 3.0 minutes. Testing H0: μ_d = 0 against H1: μ_d ≠ 0 at α = 0.05, with t₀.₀₂₅,₇ = 2.365, what are the test statistic and the decision?