3. A branch breaks off the top of a giant sequoia tree and falls straight to the ground. The branch's height in meters is approximately h(t) = -1672 +300 where t is the time in seconds. About how long is the branch in
the air?
8.6 s
4.3 s
с 2.2 s
D 1.1 s
A

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