Find the area under the standard normal curve between z = - 1.5 and z = 2.5

To get the area that lies between z=-1.5 and z=2.5 we proceed as follows;

The probability associated with the z=-1.5 is P (-1.5) = 0.668

The probability associated with the z=2.5 is P (2.5) = 0.9938

Therefore;

The area under the indicated z-scores will be:

P (2.5) - P (-1.5)

=0.9938-0.668

=0.3258