When the ‘Z’ value is equal to or exceeds 2.58 one may safely conclude that the difference between the means is significant at
A. 0.02 level
B. 0.01 level
C. 0.001 level
D. 0.05 level
Answer:B
When the ‘Z’ value is equal to or exceeds 2.58 one may safely conclude that the difference between the means is significant at
A. 0.02 level B. 0.01 level C. 0.001 level D. 0.05 level