Medium
Confidence intervals, t-scores
Free
A 95% confidence interval for the mean number of hours university students sleep is [6.5, 7.5]. Which of the following interpretations is correct?
A
95% of students sleep between 6.5 and 7.5 hours.
B
There is a 95% probability that the true population mean lies between 6.5 and 7.5.
C
If we took repeated samples, 95% of the calculated intervals would contain the true population mean.
D
The mean of the sample is 7.0 with 95% certainty.