The likelihood that the light bulb will burn for more than 1,500 hours can be calculated as the ratio of bulbs that burnt out after more than 1,500 hours to the total number of bulbs tested:
Likelihood = 2200/2500 = 0.88
Therefore, the likelihood that Lucy's light bulb will burn for more than 1,500 hours is 0.88 in decimal form.
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)
1 answer