Question

Company X tested its light bulbs to see how long they would last. On a production line, 2,500 bulbs were taken and tested. The department in charge reported that out of 2,500 bulbs, there were 2,200 bulbs that burnt out after more than 1,500 hours of use. Lucy purchased a light bulb from Company X. What is the likelihood that it will burn for more than 1,500 hours? Write your answer in decimal form.(1 point)

Answer 1

The likelihood that Lucy's light bulb will burn for more than 1,500 hours is 0.88.

This is because out of the 2,500 bulbs tested, 2,200 burnt out after more than 1,500 hours.

So the probability of a bulb from Company X burning out after more than 1,500 hours is 2,200/2,500 = 0.88.

Answer 2

The likelihood of a light bulb from Company X lasting more than 1,500 hours can be calculated by dividing the number of bulbs that lasted more than 1,500 hours (2,200) by the total number of bulbs tested (2,500).

Likelihood = 2,200/2,500 = 0.88 or 88%

So, the likelihood that Lucy's light bulb will last more than 1,500 hours is 0.88 or 88%.