A large box contains Original price. Below the box are 2 smaller boxes that contain Discounted price and Subtracted discount. Use the diagram to help you solve this problem.

Toy Emporium is having its annual sale. All items are marked with a 40 percent discount. Find the discounted price for each item and round to the nearest hundredth.

Motorized train for $9.99 =
Doll house for $12.99 =
Building blocks for $5.69 =

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.