Business Statistics lecture 8 -- Confidence Intervals

[ COMPLETE VIDEO LIBRARY: http://www.halsnarr.com/snarrinstitute.htm ] Intuition of confidence interval (0:00), Interval Estimate (IE) of mu with sigma known (2:58), normality conditions of IE with sigma known (11:55), Numerical example of IE with sigma known (12:36), The sigma unknown case (16:01), t distribution (16:45), t and standard normal are identical for large samples (17:52), Finding t values in the t table (19:22), IE of mu with sigma unknown (21:31), Numerical example of IE with sigma unknown (30:03), Conditions needed to use t-distribution (32:19), Necessary sample size for IE of mu (33:29), IE of the proportion (36:46), normality condition (37:02), Example of IE of proportion (38:34), Necessary sample size for IE of proportion (40:39)