A calculator manufacturing company checks 500 calculator units, and 25 of them have non-functioning keys. Approximate the relative frequency of a non-defective unit from this batch of items. Express your answer in the simplest form of a fraction.(1 point)
Responses
19/20
25/500
475/500
1/20
475/500
The relative frequency of a non-defective unit is calculated by taking the total number of non-defective units and dividing it by the total number of units checked. So in this case, there are 500 total units checked and 25 of them are defective, leaving 475 non-defective units.
Therefore, the relative frequency of non-defective units is 475/500, which simplifies to 19/20.
So the correct answer is 19/20.