Answer:
![(44)/(80)](https://img.qammunity.org/2022/formulas/mathematics/high-school/lyrrel59mia9du87js4crmjl87x3hyp2za.png)
Explanation:
We know that the shop only buys Banana with lengths between 13 cm and 20 cm.
So, the fraction of the 80 bananas is actually a ratio between the y-values of each length (13 and 20 cm) and the total 80. First, let's see which y-values belong to each length.
Notice that 13 below to 20 at Cumulative Frequency. And 20 belongs to 62. So, the pairs are (13,20) and (20,62).
![(62-20)/(80) =(42)/(80)](https://img.qammunity.org/2022/formulas/mathematics/high-school/rfcw30rumo9k9wcxiaz4ifqlgvj9eafknl.png)
Therefore the shop only buys 42 bananas out of 80, because those are between 13 cm and 20 cm.