From the z-table:

(a) 0.2823

probdist4_normal__141.png

(b) 0.2123

probdist4_normal__143.png

(c) 0.1664 + 0.2823 = 0.4487

probdist4_normal__145.png

(d) 0.4332 - 0.1700 = 0.2632

probdist4_normal__147.png

(e) 0.4082 + 0.5 = 0.9082

probdist4_normal__149.png