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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.
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Mathematics, 22.06.2019 01:30
Which shaded region is the solution to the system of inequalities? y y[tex]\geq[/tex]-x+1
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Mathematics, 22.06.2019 05:00
Aubrey read 29 books and eli read 52 books what number is equal to the number of books aubrey read
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