Suppose the engineering specifications on the shelf depth of a certain slug to be turned on a CNC lathe are from .0275 in. to .0278 in. and that values of this dimension produced on the lathe can be described using a normal distribution with mean LaTeX: \mu μ and standard deviation LaTeX: \sigma σ . (a) If LaTeX: \mu μ = .0276 and LaTeX: \sigma σ = .0001, about what fraction of shelf depths are in specifications? (b) What machine precision (as measured by LaTeX: \sigma σ ) would be required in order to produce about 98% of shelf depths within engineering specifications (assuming that LaTeX: \mu μ is at the midpoint of the specifications)?

The school track has eight lanes. each lane is 1.25 meters wide. the arc at each end of the track is 180. the distance of the home straight and the radii for the arcs in the 1st 4 lanes are given. s=85m r1=36.5m r2=37.75m r3=39m r4=40.25m part one: find the radii of lanes 5 through 8 of the track. show your work. part two: if max ran around lane one, how far did he run? show your work and explain your solution. part three: max wants to run a total of three laps around the track, choose two additional lanes (2-8) for him to run and find the distance around those two lanes. show your work and round to the hundredths. part 4: based on your lane choices in part three, what was the total distance max ran in the three laps around the track?