How do you find the area under the standard normal curve that lies to the right of z = 2.01?

1 Answer
Michelle
Jun 24, 2017

.0222, or 2.22%

Explanation:

If you have a graphing calculator, you can use it to find the area.

Hit 2nd > VARS > 2: normalcdf(

This will prompt you for the lower bound, upper bound, mean (#mu#), and standard deviation (#sigma#).

First, fill in your lower and upper bounds. You want to find the area to the right of z = 2.01, which means 2.01 and everything above that. Therefore,

lower bound = 2.01
upper bound = 999

Keep #mu# (the mean) as 0 and #sigma# (the standard deviation) as 1, since we are dealing with z scores.

Then press paste and enter, and you should get an answer of approximately .02221, or 2.22%.

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