Question

Using the TI-84 calculator, find the area under the standard normal curve. Round the answers to four decimal places.

(a) Find the area under the standard normal curve that lies between z=-0.86 and z=1.82.

(b) Find the area under the standard normal curve that lies outside the interval between z=0.07 and z=2.31.

(c) Find the area under the standard normal curve to the left of z=1.02.

(d) Find the area under the standard normal curve to the right of z=1.17.

Part 1 of 4

The area between z=-0.86 and z=1.82 is 0.7707

Part 2 of 4

The area outside the interval between z=0.07 and z=2.31 is _______ .

Answer 1

b) Area under the standard normal curve that lies outside the interval between z = 0.07 and z = 2.31=

P(Z > 2.31) + P(Z < 0.07)

= 0.0468 + 0.5279

= 0.5747

c) The area to the left of z = 1.02 =

P(Z < 1.02) = 0.8461

d) The area to the right of z = 1.17 =

= P(Z > 1.17)

= 0.121

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