The radii for a penny and a nickel are shown. What is the difference in the circumferences in millimeters? 9.525 penny, 10.605 nickel

When using the linear combination metho e linear combination method to solve a system of linear equations, the four options are:

Which statement describes surface features called maria on the moon

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.