Harbor need to mail an envelope she where is it at home as 10.4 ounces when she gets to the post office to clique where is it at 9.6 ounces what is the percent error in the weight of the envelope

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? probability distribution px(x) 6 hours 7 hours 8 hours 9 hours 10 hours 0.62 0.78 пол