In a Metal Fabrication Process, Metal Rods Are Produced to a Specified

Multiple Choice

In a metal fabrication process, metal rods are produced to a specified target length of 15 feet. Suppose that the lengths are normally distributed. A quality control specialist
Collects a random sample of 16 rods and finds the sample mean length to be 14.8 feet and
A standard deviation of 0.65 feet. The standard error of the mean is

A) 0.65 ft.
B) 0.346 ft.
C) 0.1625 ft.
D) 0.0098 ft.
E) 1.625 ft.