Answer:


Step-by-step explanation:
Given

<em>The attachment presents the table properly</em>
Solving (a): Percentage of those who play for less than 50 hours weekly
To do this, we simply consider the frequency of students that fall within:
1.0 - 7.9, 8.0 - 14.9,......,43.0 - 49.9
Their frequency is:


The percentage is then calculated as:






Solving (b): Percentage of those who play for 43 or more hours weekly
To do this, we simply consider the frequency of students that fall within:
43.0 - 49.9,......,64.0 - 70.9
Their frequency is:


The percentage is then calculated as:





