Mathematics, 08.10.2019 21:30 duckydo
Avideo game designer is evaluating a new release and issues a pre-release version to a set of testers. the testers spend an average of 12 minutes to complete the first level, with a standard deviation of 3.5 minutes. assuming a normal distribution for the data, 84% of players should complete the first level in less than how many minutes?
Answers: 2
Mathematics, 21.06.2019 19:40
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
Mathematics, 22.06.2019 02:30
Aconstruction worker needs to put a rectangular window in the side of a building he knows from measuring that the top and bottom of the window have a width of 8bfeet and the sides have a length of 15 feet he also measured one diagonal to be 17 feet what is the length of the other diagonal
Answers: 1
Avideo game designer is evaluating a new release and issues a pre-release version to a set of tester...
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