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Confidence Interval
With 95% confidence, the program director estimated that the proportion of MGMT 650 students that are very satisfied is 90% + or - 5%.
1. There is a 5% prob that the true proportion of very satisfied students falls between 85% and 95%.
2. With 95% prob, random confidence intervals contain the true proportion. Loosely, we say that with 95% confidence, the confidence interval (85%, 95%) contains the true proportion.
3. The proportion of very satisfied students cannot be off by more than 5%.
4. With 95% prob, the true proportion of very satisfied students falls between 85% and 95%.
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