Question

One institute mandates that for every 100 items scanned through the electronic checkout scanner at a retail​ store, no more than 2 should have an inaccurate price. A recent study of the accuracy of checkout scanners at the stores of a certain company showed​ that, of the 70 company stores​ investigated, 56 violated the​ institute's scanner accuracy standard. If 1 of the 70 company stores is randomly​ selected, what is the probability that that store does not violate the institute scanner accuracy​ standard?

Answer 1

There is a 20% probability that the store selected does not violate the institute scanner accuracy​ standard

Explanation:

70 company stores were investigared.

56 violated the​ institute's scanner accuracy standard.

70-56 = 14 did not violate the institute scanner accuracy​ standard.

If 1 of the 70 company stores is randomly​ selected, what is the probability that that store does not violate the institute scanner accuracy​ standard?

This is 14 divided by 70, so:

`P = (14)/(70) = 0.2`

There is a 20% probability that the store selected does not violate the institute scanner accuracy​ standard