SOLUTION: what proportion of observations from the standard normal distribution are greater than 2.88? Use 4 decimal places in your answer.

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Question 1185038: what proportion of observations from the standard normal distribution are greater than 2.88? Use 4 decimal places in your answer.
Found 2 solutions by Theo, Edwin McCravy:
Answer by Theo(13342) About Me  (Show Source):
You can put this solution on YOUR website!
the area to the right of the z-score of 2.88 is equal to .0019884417, based on my ti-84 plus calculator.

round to 4 decimal places to get .0020.


Answer by Edwin McCravy(20060) About Me  (Show Source):
You can put this solution on YOUR website!

On your TI-84, press ON CLEAR 2ND VARS 2

Make the screen read like this:

     normalcdf
lower:2.88
upper:99999999
μ:0
σ:1     
Paste

Use the down arrow key to highlight Paste
Press ENTER

Read this:

normalcdf(2.88,99999999,0,1)

Press ENTER
 
Read 0.0019884417

Round to 0.0020

Edwin