Normal distribution: finding the mean and standard deviation

Note - instead of using printed tables, it is now possible to use the CASIO Classwiz calculator to find the relevant z-values

[arunavsingh]

You are a godsent to me. Made this topic so easy for me. Thank you so much

[sedinang]

Been sweating while solving this kind of question, and this video is a big help. Thank you!!

[andritalvaradobaez]

thank you, really i try to do this for 3 hours and your video was like miracle

[amirahmardhiah]

THANK YOU SO MUCH, YOU JUST SAVED MY LIFE!