A military jet flying above a target is detected on the radar screen of an operator stationed 24 km away from that target The altitude of the plane if it is at a distance of 26 km from the operator's location is k km
26 km
24 km
What is the value of K?
Answer

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.