A machine cuts plastic into sheets that are 35 feet 420 inches) long
A machine cuts plastic into sheets that are 35 feet 420 inches) long. Assume that the
population of lengths is normally distributed. Complete parts (a) and (b).
a) The company wants to estimate the mean length the machine is cutting the plastic within
0.5 inch. Determine the minimum sample size required to construct a 95%
confidence interval for the population mean. Assume the population standard deviation is 1.00
inch…………..N=
B)Repeat part (a) using an error tolerance of 0.25 inch. …….N=
