if-a-researcher-constructs-a-90-confidence-interval-for-the-mean-income-of-a-cit

Question

If a researcher constructs a 90% confidence interval for the mean income of a city, what does the 90% confidence level mean?

Accepted Answer

There is a 90% probability that the interval contains the true mean income.

Answer

The mean income is exactly at the midpoint of the interval.

Answer

The interval contains 90% of the data points.

Answer

The interval is 90% as wide as the population range.