Photo by: Alila. Exocytosis is the cellular process in which intracellular vesicles in the cytoplasm fuse with the plasma membrane and release or secrete their contents into the extracellular space.
More generally, the formula for the 95% confidence interval on the mean is: Lower limit = M - (tCL)(sM) Upper limit = M + (tCL)(sM) where M is the sample mean, tCL is the t for the confidence level desired (0.95 in the above example), and sM is the estimated standard error of the mean.
Best Answer: It depends on what you mean by precision. If you mean interval width, then there is a simple reason. Confidence intervals are usually specified as mean + or - interval width. The interval width is set by specifying a confidence level like 95%, 99%, etc. The upper confidence limit is mean + interval width.