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

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) (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) (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

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