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Normal Distribution · Question 44 of 68

Question 44

MediumOriginal question

Given P(0<Z<0.25)=0.0987P(0 < Z < 0.25) = 0.0987, what is P(Z>−0.25)P(Z > -0.25)?

Options for question 44

Show the answer and explanation
CorrectNot quiteAnswer D

Correct answer: D

Explanation

  1. P(Z>−0.25)P(Z > -0.25) is the whole right half plus the part from −0.25-0.25 to 0, which equals 0.0987.

  2. 0.5+0.0987=0.59870.5 + 0.0987 = 0.5987.

Worth noting

0.4013 is P(Z<−0.25)P(Z < -0.25), the other side.

Concept
The area for a negative z
Typical time
90 s
Your time
—
The rule this testsAreas under the curve
Practise this chapter →

Ten questions from Normal Distribution, at your own pace.

Practise this chapter →

Ten questions from Normal Distribution, at your own pace.