by symmetry.
This is a very nice stat calculator...
http://www.danielsoper.com/statcalc/calc20.aspx
Plug in 1.5 and you get
How do you find P(X>111) and P(X<85) if the mean is 100 and the SD is 10? For the 1st one I did (111-100)/10=1.1 which is 0.1357 on the normal distribution table. For the 2nd one, I'm not so sure how to go about it. First I did (85-100)/10=-1.5. Since it is < rather than >, I just took the value of 1.5 from the normal distribution chart, 0.0668. Any suggestions? Thank you
by symmetry.
This is a very nice stat calculator...
http://www.danielsoper.com/statcalc/calc20.aspx
Plug in 1.5 and you get