Specifications for the shaft of an electric motor indicate the diameter of the shaft must be within 0.5±0.01 inches to be considered non-defective. data from inspectors indicate that currently, shaft diameters follow a normal distribution with mean m=0.505 and standard deviation s=0.005.
a) what fraction of shafts will be defective?
b) suppose the mean shifts to m=0.5, now what fraction of shafts will be defective?
c) suppose the mean stays at m=0.5, and you want to reduce the standard deviation so that 99.9% of the shafts are non-defective. what value of s will produce the desired result?

Find the area and perimeter of each composite figure. use 3.14 for π. round your answer to the nearest tenth. a square and a right triangle share a common side. image long description a 3-meter by 0.5-meter rectangle has triangles attached like wings to the 3-meter sides. the other two sides of both triangles measure 2.5 meters. the height of each triangle is 2 meters. a 6-inch by 4-inch rectangle has 2 half-circles attached like wings to the 6-inch sides. the radius of each half-circle is 3 inches. find the surface area and volume of each figure. use 3.14 for π. round your answer to the nearest tenth. a right circular cylinder has a base radius of 6 yards and a height of 20 yards. a rectangular prism has a base that is 9 centimeters long and 7 centimeters wide. the height is 2 centimeters. a rectangular prism has a base that measures 11 millimeters by 11 millimeters. the height is 11 millimeters.

Rewrite so the subject can be y in the formula d=m-y/y+n

Parallelogram rstu is a rhombus. m∠r = 120° what is m∠t = 120 (what is m∠rsu? )