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Applying invNorm function

Applying invNorm function

IB Year 6 | Grade 12

If \(X \sim N(84, 12)\), find \(h\) if

  1. \(\mathrm{P}(X > h) = 0.9255\)
  2. \(\mathrm{P}(|X - 84| \le h) = 0.4028\)

Solution:

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Answer:(a) \(h\approx79.0\). (b) \(h\approx1.83\) (3 s.f.).

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