The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
In most test analysis, we always want to construct a parameter model, and then through sample statistics and model parameters, we can get the properties, or characteristics of what we concern about. Confidence intervals can give an estimate of the range within which the true value of the statistic lies. And a narrow confidence interval indicates the low variability of the statistic, which can give...