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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, 21.06.2019 21:00
God's gym charges a sign-up fee of $100 plus $30 per month. write an expression to represent how much someone would pay for a membership.
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Mathematics, 22.06.2019 00:30
For the word below, click on the drop-down arrows to select the root and its meaning. version
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What is the factored form of x2 – x – 2?...
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