SOLUTION: For a standard normal distribution, find: P(z

SOLUTION: For a standard normal distribution, find: P(z > c) = 0.309

Question 1184958: For a standard normal distribution, find:
P(z > c) = 0.309
Answer by Edwin McCravy(20060) (Show Source): You can put this solution on YOUR website!

On your T-84, assuming first that it's a later model.

Press 2ND VARS 3

Make the screen read

               invNorm
area:0.309
μ:0
σ:1
Tail: LEFT CENTER RIGHT
Paste

Use the down arrow key to scroll to highlight RIGHT, 
press ENTER to highlight. Then scroll to Paste and press 
ENTER again.

You'll see this:

invNorm(0.309,0,1,RIGHT)

Press ENTER

Read 0.4986868636

Round the way you were told, probably to 0.4987.

P(z > 0.4987) = 0.309

If your calculator is too old to have "LEFT CENTER RIGHT", you'll have to
make it read:

invNorm(1-0.309,0,1) then press ENTER.

Edwin

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