Mathematics, 22.01.2020 10:31, mutesheep
Math is very confusing and this makes no sense
a running track has the shape of a rectangle capped with a semicircle on each end, as shown below. if the track is 80 feet wide, and the rectangular portion of the track is 90 feet tall, estimate the length around the outside of the track.
Answers: 2
Mathematics, 21.06.2019 19:40, evarod
Afactory makes propeller drive shafts for ships. a quality assurance engineer at the factory needs to estimate the true mean length of the shafts. she randomly selects four drive shafts made at the factory, measures their lengths, and finds their sample mean to be 1000 mm. the lengths are known to follow a normal distribution whose standard deviation is 2 mm. calculate a 95% confidence interval for the true mean length of the shafts. input your answers for the margin of error, lower bound, and upper bound.
Answers: 3
Math is very confusing and this makes no sense
a running track has the shape of a rectang...
a running track has the shape of a rectang...
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