Using the dotplot and sample proportion, is there convincing evidence that the teacher’s claim is false?
Answer
A
No, because a proportion of 0 point 4 0 or more occurred 98 out of 100 times, the sample proportion of red marbles is not statistically significant and there is not convincing evidence that the teacher’s claim is false.
B
No, because a proportion of 0 point 4 0 or less occurred 2 out of 100 times, the sample proportion of red marbles is not statistically significant and there is not convincing evidence that the teacher’s claim is false.
C
Yes, because a proportion of 0 point 4 0 or more occurred 98 out of 100 times, the sample proportion of red marbles is statistically significant and there is convincing evidence that the teacher’s claim is false.
D
Yes, because a proportion of 0 point 4 0 or less occurred only 2 out of 100 times, the sample proportion of red marbles is statistically significant and there is convincing evidence that the teacher’s claim is false.