In a production lot of steel beams the length of a certain t
In a production lot of steel beams, the length of a certain type of steel beam is normally distributed with mean 5 feet and standard deviation 0.36 feet. What is the probability that the average length of 36 randomly selected steel beams will be exactly 5.072 feet?
Solution
P(sample mean = 5.072) = 0 because this is continuous distribution and probability at any point is zero.
