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Normal Distribution · Question 27 of 68

Question 27

EasyOriginal question

Given P(0<Z<0.8)=0.2881P(0 < Z < 0.8) = 0.2881, what is P(Z<0.8)P(Z < 0.8)?

Options for question 27

Show the answer and explanation
CorrectNot quiteAnswer D

Correct answer: D

Explanation

  1. The left half has area 0.5, and 0.2881 lies between 0 and 0.8.

  2. 0.5+0.2881=0.78810.5 + 0.2881 = 0.7881.

Worth noting

0.2881 is only the part from 0 to 0.8.

Concept
The area to the left of z
Typical time
60 s
Your time
—
The rule this testsAreas under the curve
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