Suppose that the lengths are normally distributed. A quality 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 standard error is 0.65 feet
b. The sampling distribution for the sample mean is Normal with a mean of 14.8 feet and standard deviation of .65 feet
c. The mean of the sampling distribution for the sample mean is 14.8 feet
d. The sampling distribution for the sample mean follows the t-distribution with 15 degrees of freedom.
e. the sampling distribution for the sample mean follows the t-distribution with 16 degrees of freedom