Rewrite these in increasing order of length:
133 dm. 433 cm, 308 km, 91 mm

What is the first step of an indirect proof of a number that is divisible by two

Write the pair of fractions as a pair of fractions with a common denominator

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.