Answer:
69%
Explanation:
The computation of the learning rate is shown below:
The Average hour per unit is
= 103.6 hours ÷ 25 units
= 4.14 hours per unit
Now
Total variance for mean
= 7 hours - 4.14 hours
= 2.86 hours
Finally
Learning rate is
= (2.86 hours ÷ 4.14 hours) ×100
= 69%
