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
Mathematics, 21.06.2019 20:30, qveenvslayin
Erin bought christmas cards for $2 each to send to her family and friends. which variable is the dependent variable?
Answers: 1
Find the reference angle β, for the angle β = 4π/3....
Geography, 12.10.2019 00:30
Mathematics, 12.10.2019 00:30