Suzanne on the small business that employs five other people she makes 100,000 per year and the other five employees make 40,000 and 50,000 per year the data has been plotted below on a number line. what is the mean salary at the company hit each take on the number line goes up by two

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.