A company checks 500 calculators and 25 of them have non functioning keys. what is the relative frequency of a non defective unit from this batch
To find the relative frequency of a non-defective unit from this batch, we need to first determine the number of defective calculators in this batch.
Given that there are 25 defective calculators out of 500, we can calculate the relative frequency of a non-defective unit as follows:
Number of non-defective calculators = Total number of calculators - Number of defective calculators
Number of non-defective calculators = 500 - 25
Number of non-defective calculators = 475
Relative frequency of a non-defective unit = Number of non-defective calculators / Total number of calculators
Relative frequency of a non-defective unit = 475 / 500
Relative frequency of a non-defective unit = 0.95 or 95%
Therefore, the relative frequency of a non-defective unit from this batch is 95%.