Mathematics, 20.01.2021 06:10 ebzloera
The graph represents an object that is shot upwards from a tower and then dependent variable is the objects height above the ground in meters
a. how tall is the towers from which the object was shot
b. when did the object hit the ground
c. estimate the greatest height the object and the time it took too reach that height. indicate this situation on the graph
Answers: 1
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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.
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Mathematics, 21.06.2019 22:10
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