Using this dotplot and the difference in proportions from the samples, is there convincing evidence that the new additive was more effective?
Answer
A
No, because a difference in proportions of 0 point 4 or less occurred 193 out of 200 times, meaning the difference is not statistically significant and the new additive is not more effective.
B
No, because a difference in proportions of 0 point 4 or more occurred 7 out of times, meaning the difference is not statistically significant and the new additive is not more effective.
C
Yes, because a difference in proportions of 0 point 4 or more occurred 7 out of 200 times, meaning the difference is statistically significant and the new additive is more effective.
D
Yes, because a difference in proportions of 0 point 4 or less occurred 193 out of 200 times, meaning the difference is statistically significant and the new additive is more effective.