The three confidence intervals below were constructed from the same sample. One of them was computed at a confidence level of 90%, another at a confidence level of 95%, and another at a
Confidence level of 98%.
Which is the confidence level at 98%?
A) $31.3

Question

The three confidence intervals below were constructed from the same sample. One of them was computed at a confidence level of 90%, another at a confidence level of 95%, and another at a
Confidence level of 98%.
Which is the confidence level at 98%? 
A) $31.3 < \mu < 40.7$
B) cannot be determined
C) $30.3 < \mu < 41.7$
D) $29.3 < \mu < 42.7$

Quizplus · Accepted Answer

The confidence interval with the widest range corresponds to the highest confidence level, which in this case is $29.3 < \mu < 42.7$, indicating a 98% confidence level.

The Three Confidence Intervals Below Were Constructed from the Same 31.3<μ<40.731.3 < \mu < 40.731.3<μ<40.7

The Three Confidence Intervals Below Were Constructed from the Same $31.3 < \mu < 40.7$