Proper order of 1/2, 5/6, 2/7, 4/2 least to greatest

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.

What are the values of each variable in the diagram below?

Sara made $253 for 11 hours of work. at the same rate how much would he make for 7 hours of work?