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Lecture Comments (7)

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Post by Joselito De Jesus on January 15, 2014

Hello Alex I want to fist thank you for getting back to me and I would also like to apologize because I made a mistake in reference to where you mention  " the link below" when I said it was at "about 1:50" into the video lesson.
       What I meant was the part in the video where you mention  "the charts on the link below" which is actually around 2:40 into the video is supposed to give me the area to the left of the 1.95. I don't see the link that has that information so I don't know how we are getting the answer  of .9744...

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Post by Joselito De Jesus on January 13, 2014

Hello I'm new to and I would like to know where are the link that you refer to on the bottom about 1:50 min into the video that are supposed to help you follow along in the lesson?

1 answer

Last reply by: Alex Moon
Wed Jan 2, 2013 7:51 PM

Post by Anil George on August 20, 2012

How the "answers" were derived is a bit confusing. He just conjures numbers and gets "answers."

Standard Normal Distribution

  • The standard normal distribution is a normal distribution with a mean of 0 and a standard deviation of 1.

  • Standard normal random variables are also known as “z-scores.”

  • Draw a picture of the curve and shade in the interval of which you want to find the probability.

Standard Normal Distribution

Lecture Slides are screen-captured images of important points in the lecture. Students can download and print out these lecture slide images to do practice problems as well as take notes while watching the lecture.

  • Intro 0:00
  • Standard Normal Distribution 0:06
    • Z-Scores
  • Examples 1:57
  • More Examples 4:43
  • More Examples 7:12
  • Extra Example 1
  • Extra Example 2