If university officials say that at least 70% of the voting student population supporting the fee increase, if the 95% confidence interval is [0.75, 0.85], what conclusion can be drawn based on a 95% level of confidence?
A) 70% is not in the interval, need to take another sample
B) 70% is not in the interval, so assume it will not be supported
C) 70% is below the interval, so assume it will be supported
D) Since this was not based on population, cannot make conclusion

Question

Quizplus · Accepted Answer

The entire confidence interval [0.75, 0.85] is above 70%, indicating that it is reasonable to conclude that at least 70% of the voting student population supports the fee increase.

If University Officials Say That at Least 70% of the Voting