Question

What is the area under the normal curve between the z-scores of −1 and 0?

Enter your answer as a decimal, rounded to the nearest hundredth, like this: 0.42

Answer 1

0.34

Explanation:

You know from the empirical rule that 68% of the area of the normal distribution lies in the range z=-1 to z=1. The distribution is symmetrical, so half that area lies in the range z = -1 to z = 0.

area = 68%/2 = 34% = 0.34

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