Hey @Kevin_Shey and @Askaleto,

Thanks a lot for pointing out the discrepancies in the lecture video. To these, I would like to add a few more discrepancies that are present in the lecture video.

At 4:50, Luis states the following:

X/n_A has a mean P_A and a standard deviation, square root of P_A*1-P_A/n_A. Y and B will have parameters Mu = P_B and Sigma equals square root of P_B*1-P_B/n_B.

However, in the slide, as per the convention followed in the previous lecture videos, we have denoted the normal distributions with the help of the variance. It would be great, if the transcription along with the verbal description can be corrected, to avoid any possible source of confusion.

At 5:07, Luis states the following:

That’s because this is the standard deviation for the binomial distribution.

I believe it should be “variance” instead of “standard deviation”. Once again, please correct the audio + transcription here.

At 7:25, Luis states the following:

This means that the observed statistic is -2.07. What is the p-value for the sample? Well, it will be the area under this Gaussian PDF which has a value of 0.019.

As per the slide, observed statistic is `-1.336`

. Please correct the audio + transcription here. Also, as Kevin and Asim have said, it should be `0.091`

instead of `0.019`

. Additionally, the area marked in yellow is incorrect, and the label is also incorrect. Please correct the visualization here.

P.S. - Please unlist this thread, once the issues have been rectified.

Cheers,

Elemento