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.

Answer 1

bot what is the answer

Answer 2

it said 0.12 was wrong

Answer 3

its 0.88

Answer 4

The proportion of bulbs that burned out after more than 1,500 hours of use is:

2,200/2,500 = 0.88

Therefore, the likelihood that Lucy's bulb will burn for more than 1,500 hours is:

1 - 0.88 = 0.12

In decimal form, this is 0.12.