The apartment building where james lives was built with brick that total 41 ten thousands. what the number in this standard form

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.

In which direction does the left side of the graph of this function point? f(x) = 3x3 - x2 + 4x - 2

How can you find the mean absolute deviation (mad) for this set of data?