A normal distribution has µ = 241 and σ = 2. What is P(X ≥ 235)?
Correct answer A. 0.9986
Explanation
Standardising gives z = (235 − 241)/2 = −3, and the area to the right of z = −3 under the standard normal curve is about 0.9986.
Answer checked How we write and check questions
Discussion