Normal density function - general formula

Hello,

In slides following functions are given as
image
And
image

But these fuctions should be
image
And
image
respectively.

There is missing sigma term in denominator which is required to get Variance as (sigma)^2 while solving integrals

Following are screenshots for same


And

Following wiki link confirming same

A post was merged into an existing topic: Error: Help regarding normal distribution week 17