@9:40 ... cumulative (true) means Excel is adding all the probabilities to the LEFT. That is why you need to subtract it from 1 to get all the probabilities to the RIGHT. You should put a correction in this video.
note to self: theorem 1: studying the mean of a sample is the same as the mean of the entire population central Limit theorem: for any sample size, it eventually reaches a normal distribution if the sample population is large enough
@9:40 ... cumulative (true) means Excel is adding all the probabilities to the LEFT. That is why you need to subtract it from 1 to get all the probabilities to the RIGHT. You should put a correction in this video.
note to self: theorem 1: studying the mean of a sample is the same as the mean of the entire population central Limit theorem: for any sample size, it eventually reaches a normal distribution if the sample population is large enough
in z equation, sigma/square root of n is the srandard error
Thank you keep it up
Thank you so much.
Thnx