Answer :
0.0912 is the probability that the score will be 120 or higher .
What is probability explain with an example?
- The likelihood that something will occur is the foundation of it.
- The justification for probability serves as the basic foundation for theoretical probability.
- A coin is tossed, for instance, and the theoretical likelihood of getting a head is 1 in 2.
Zlower = X₁ - μ/σ = 120 - 100/15 = 1.33
the probability is compared as
Pr ( X ≥ 120 ) = Pr(X - 100/15 ≥ 120 - 100/15)
= Pr(Z ≥ 120 - 100/15
= Pr( Z ≥ 1.33)
= 0.0912
Since 0.0912 > 0.05 i.e. this IQ score is not unusual and hence I can believe the claim.
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