Mean:
Std Dev σ:
X:
Z:
a:
b:
P(X > a):
P(X < a):
P(a < X < b):
n:
std error = σ √n:
P(x̄ > a):
P(x̄ < a):
P(a ≤ x̄ ≤ b):

Update
Clear

Percentile for x
% of values are less than