Answer
0.7088
Work Step by Step
Let's find the z-score for 100 cm:
$z=\frac{X-μ}{σ}=\frac{100-92.5}{13.7}=0.55$
According to Table V, the area to the left (waist circumference is less than 100 cm) of the standard normal curve for a z-score equal to 0.55 is 0.7088.
