Probability Calculator

Please provide any 2 values below to calculate the rest probabilities of two independent events.

Probability of A: P(A)

Probability of B: P(B)

Probability of A NOT occuring: P(A')

Probability of B NOT occuring: P(B')

Probability of A and B both occuring: P(A∩B)

Probability that A or B or both occur: P(A∪B)

Probability that A or B occurs but NOT both: P(AΔB)

Probability of neither A nor B occuring: P((A∪B)')

Use the calculator below to find the area P shown in the normal distribution, as well as the confidence intervals for a range of confidence levels.

Mean: (µ)

Standard Deviation (σ):

Left Bound (L_b):

For negative infinite, use -inf

Right Bound (R_b):

For positive infinite, use inf