Sort the statements and formulas into the two categories. Circumference of a circle
C = id
Area of a circle
Recent Rpps
A = nr 2
Distance around a circle
C = 2
Front-Facing
Home
Measured in square units
Camera
(radius)(1/2 circumference)
Back
D
Intro
Previous Activity

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.