the stemplot displays the arm spans, in centimeters for 44 students. What percentage has an arm span of at least 170 cm?

Answer: B) 45%
Step-by-step explanation:
There are 20 measurements that are 170 cm or greater.
There are a total of 44 measurements.
[tex]\dfrac{20}{44}=\large\boxed{45\%}[/tex]