Normal Distribution | Mean to Z Table | How to Calculate Probabilities

This video shows how to use the Mean to Z table to solve normal probability problems.
(00:00) Intro
(00:45) Standard Normal Distribution
(01:19) Mean to Z table examples
(03:17) Application examples
(06:58) Summary

[@Cheesecake99YearsAgo]

Yay!
You are finally making a video using this type of standard normal distribution

[@PhanTomZee.]

Life savior, a whole lot 🙏🏽

[@Blues9]

Thanks and you’re a genius!

[@cbc015shayonbasu9]

brilliant 👌

[@brendasharpe5379]

Hello, do you conduct online tutoring? If so, I would be interested.

[@EarthColonyNet]

Mr. Emmanuel, are we actually doing calculus, i.e., derivatives and integrals when we do normal distribution analysis using the Z table?

[@joshemman]

Yes. The areas in the table will represent definite integrals of the standard normal probability density function.

[@EarthColonyNet]

@@joshemman Yes! It's amazing how there is a hand full of central equations like exponential y = ab^2 which are applicable to different problems like interest rates and half-life analysis. Thanks for the response.

[@tahsanabrar7671]

If we have a value of Z to 3 dp do we need to convert that to 2dp and then take the value from the table?

[@joshemman]

Yes, you need to first correctly round to 2 decimal places before you use the table.

[@GiuliaNazarof]

hi, Excel =NORMSDIST(1.32)-0.5 IS NOT WORKING

[@paelojustinianoibarra1743]

what si the difference between subtracting 1 or 0.5

[@joshemman]

It depends on the type of table you have. Area under the entire cuver is 1 while the area under half of the area is 0.5.