In a metal fabrication process metal rods are produced to a

Reference no: EM13574897

In a metal fabrication process, metal rods are produced to a specified target length of 15feet.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 15 degrees of freedom.

B. The sampling distribution for the sample mean follows the t-distribution with 16 degrees of freedom.

C. The standard error is 0.65 feet.

D. The smapling distribution for the sample mean is Normal with a mean of 14.8 feet and standard deviation of .65 feet.

E. The mean of the sampling distribution for the sample mean is 14.8 feet.

Reference no: EM13574897

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