Answer
See the picture.
Work Step by Step
$Cumulative~relative~frequency=\frac{cumulative~frequency}{sum~of~all~frequencies}$
Total (sum of all frequencies): $1+0+5+9+6+7+5+11+5+1+1=51$.
Cumulative relative frequency for "4.0-5.9" is $\frac{1}{51}\approx0.0196$
Cumulative relative frequency for "6.0-7.9" is $\frac{1}{51}\approx0.0196$
Cumulative relative frequency for "8.0-9.9" is $\frac{6}{51}\approx0.1176$
Cumulative relative frequency for "10.0-11.9" is $\frac{15}{51}\approx0.2941$
Cumulative relative frequency for "12.0-13.9" is $\frac{21}{51}\approx0.4118$
Cumulative relative frequency for "14.0-15.9" is $\frac{28}{51}\approx0.5490$
Cumulative relative frequency for "16.0-17.9" is $\frac{33}{51}\approx0.6471$
Cumulative relative frequency for "18.0-19.9" is $\frac{44}{51}\approx0.8627$
Cumulative relative frequency for "20.0-21.9" is $\frac{49}{51}\approx0.9608$
Cumulative relative frequency for "22.0-23.9" is $\frac{50}{51}\approx0.9804$
Cumulative relative frequency for "24.0-25.9" is $\frac{51}{51}=1$
