If the lower limit of a confidence interval is 1.5 and the upper limit of a confidence interval is 5.5, we can state that
A) a score of 6 is impossible.
B) 95 percent of the scores should fall between 1.5 and 5.5.
C) the confidence level is extremely small.
D) the distribution is normal.

Question

Quizplus · Accepted Answer

The correct interpretation of a confidence interval, such as the one between 1.5 and 5.5, is that we are confident (to the level of confidence associated with the interval, often 95% but not specified here) that the true population parameter (mean, proportion, etc.) lies within this interval. It does not directly inform about the distribution of individual scores or the impossibility of scores outside this range.

If the Lower Limit of a Confidence Interval Is 1