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18 votes
18 votes
Find the area of the shaded region. The graph depicts the standard normal distribution with mean 0 and standard deviation 1.

Find the area of the shaded region. The graph depicts the standard normal distribution-example-1
User Lastchance
by
2.7k points

1 Answer

22 votes
22 votes

Answer:

0.2776

Explanation:

A suitable calculator can tell you the area with only the "work" of entering the numbers:

normalcdf(0.59,10) = 0.2775953248

(From a TI-83)

The area of the shaded region is about 0.2776.

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Additional comment

The area beyond 7 standard deviations from the mean is on the order of 1.3×10^-12, so "infinity" as a limit can be effectively replaced by any number more than 7 standard deviations from the mean. We have used 10 as a stand-in for "infinity", but 7 would do nicely in this context (above), where only 10 digits are displayed.

Find the area of the shaded region. The graph depicts the standard normal distribution-example-1
User Agnieszka Polec
by
2.9k points