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.Which of the following statement is true?

A) The sampling distribution for the sample mean follows the t-distribution with 16
B) The sampling distribution for the sample mean follows the t-distribution with 15
C) The mean of the sampling distribution for the sample mean is 14.8 feet.
D) The sampling distribution for the sample mean is Normal with a mean of 14.8 feet
E) The standard error is 0.65 feet.