Aglass contains 250.55 ml of water the actual amount of water in a glass was 279.45 ml to the nearest tenth of percent what is the percent error in estimate

The human resources manager at a company records the length, in hours, of one shift at work, x. he creates the probability distribution below. what is the probability that a worker chosen at random works at least 8 hours? 0.62 0.78 0.84 0.96