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Find the area under the standard normal curve to the right of z=1.9

1 Answer

1 vote

Answer:

0.02871655982

Explanation:

You want the area under the standard normal curve to the right of z=1.9.

Normal CDF

The Normal CDF function available in spreadsheets and many calculators and apps will answer this question for you. Usually, it requires two limits. Here, the upper limit is "infinity".

As a practical matter, a value of z = 10 or more is usually enough standard deviations away from the mean of 0 that no error will be seen in the result when that is used instead of "infinity."

The area under the normal curve to the right of Z = 1.9 is about 0.02871655982.

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Additional comment

The attached calculator recommends use of 1E999 as a stand-in for "infinity." Many calculators cannot represent values beyond about 1.7E308. The attachment uses 1E99, which is certainly well beyond any value that will affect the 11th or 12th decimal place.

Find the area under the standard normal curve to the right of z=1.9-example-1
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User Tolga Okur
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