For a normal distribution having µ = 241 and σ = 2 P (X≥235) is:_______?
Correct answer: A. 0.9986
- A. 0.9986
- B. 0.5
- C. 0.475
- D. 0.235
Explanation
Standardising gives z = (235 − 241)/2 = −3. Therefore P(X ≥ 235) = P(Z ≥ −3) = P(Z ≤ 3) ≈ 0.9986.
Written and checked by Zahid Hussain, MS Computer ScienceLast updated
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