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