# if you constructed 100 90% confidence intervals based on 100 different simple random samples of size n, how many of the intervals

if you constructed 100 90% confidence intervals based on 100 different simple random samples of size n, how many of the intervals would you expect to include the unknown parameter?

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1. ThanhThu
90 intervals are expected to include the unknown parameter.
Given that,
If 100 separate simple random samples of size n were used to create 100 90% confidence intervals,
What is confidence interval ?
The mean of your estimate plus and minus the range of that estimate constitutes a confidence interval. This is the range of values you expect your estimate to fall within if you repeat the test, within a given level of confidence. Confidence is another name for probability in statistics.
90 % Confidence Interval means that we are 90% confident that true parameter lies between that interval.
If we construct 100, 90% confidence interval based on 100 random samples.
So, 90 of the intervals include the true parameter.