A confidence interval addresses this issue because it provides a range of values which is likely to contain the population parameter of interest. Confidence levels. Confidence intervals are constructed at a confidence level, such as 95 %, selected by the user.
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Sky-Watcher 114 mm EQ1 reflector (upper right) with Tasco refractor. Sky-Watcher is a commercial distribution company established in 1999 by the Synta Technology Corporation of Taiwan (Synta Taiwan) that markets telescopes and astronomical equipment, like mounts and eyepieces, aimed at the amateur astronomical market.