# Practice Exam Question 2

I didn't understand why we get the probabilities from the standard normal distribution table as I get the same result but with using the PDF formula associated with a normal distribution. Would you please explain more

3 answers ( 0 marked as helpful)

Ned Krastev

Instructor

Hi Fatima,

The probabilities in the table are derived using the probability density function therefore the two correspond.

Best,

Ned

What I get from what you say is that the values in the z-table are exactly the ones after computing the CDF for each value of z.

Please where can I find the z-table in the course ?

Thank you,

The Z table is a std table available on the internet. Incidentally, the Z-table is also available in the Statistics course