Calculate Z‑scores and probabilities for a normal distribution.
The calculator first computes the Z‑score:
Z = (x − μ) / σ
Then it uses the standard normal cumulative distribution function (CDF) to compute the probability that a value is less than x.
x = 85 μ = 70 σ = 10 Possible Output: Z‑score = 1.50 Probability (P(X < x)) = 0.9332