Question

M= 130 lbs

O= 15 lbs

A= 125

B=135

Here are the steps to follow:

convert A to z score (call it za)
convert B to z score (call it zb)
From the Appendix table find the area under the curve to the left of za and to the left zb
That will give you P(z<zb)
if za or zb are not in the table, change A or B
Use formula P(A<×<B)=P(za<z<zb)=P(z<xb)-P(z<za)

Answer 1