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= −2.39 and z= −1.27.

(b) Find the area under the standard normal curve that lies outside the interval between z= −1.36 and z= 1.68.

(c) Find the area under the standard normal curve to the left of z= 0.74.

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

Nina has prepared the following two-column proof below. she is given that ∠oln ≅ ∠lno and she is trying to prove that ol ≅ on. triangle oln, where angle oln is congruent to angle lno step statement reason 1 ∠oln ≅ ∠lno given 2 draw oe as a perpendicular bisector to ln by construction 3 ∠leo ≅ ∠neo transitive property of equality 4 m∠leo = 90° definition of a perpendicular bisector 5 m∠neo = 90° definition of a perpendicular bisector 6 le ≅ en definition of a perpendicular bisector 7 δole ≅ δone side-angle-side (sas) postulate 8 ol ≅ on cpctc nina made two errors in the proof. identify and correct the errors.