Find the mean, variance, and standard deviation for the number of heads when 20 coins are tossed.

Week 9: Confidence Intervals 1 November 2016 Basic Statistics for Research Professor HK Dong Wendy Liu If the population is not normal: We can apply the Central Limit Theorem Sample means from the population will be approximately normal as long as the sample size is large enough Properties of the sampling distribution: Mean of the sample means is the population mean:...