To find probability for Normal Distribution useNormal Distribution Calculator.

Keep in mind:

total area under the curve = 1

P(z > k) = 1 P(z < k)

P(z1 < z < z2) = P(z < z2) P(z < z1)

Select your own values of z1 and z2,

each between -3.00 and +3.00

Then use Online Normal Distribution Calculatorand find :

Z1 2.50

Z2 -1.45

1) P(z < z1)

2) P(z > z1)

3)P(z < z2)

4) P(z1 < z < z2)