find the area under the standerd normal curve?

Question

find the area under the standerd normal curve between z=0.53 and z=1.24

Answer 1

just find the chart that has the values listed unless you know how to do integration

if you want to do integration the formula for normal distribution is f(x) = 1/sqrt(2*pi) * e^(-x^2/2)

otherwise just look at a chart of values and subtract z<.53 from z<1.24

Answer 2

The integrations have already worked out for you in the standard normal table.
Using the standard normal table:
Find the Z-value, 0.5 in the left column and 0.03 in the row across the top.
The probability associated with Z = 0.53 found in the body of the table is 0.7019.
Find the Z-value, 1.2 in the left column and 0.04 in the row across the top.
The probability associated with Z = 1.24 is 0.8925.
Because these are cumulative probabilities from left to right,
the answer is 0.8925 - 0.7019 = 0.1906

Answer 3

ti-83 says 0.190568

Answer 4

ewww i hate statistics...