A sample of n=64 butterflies was collected independently from a population. It is known that the distribution of the wing length has a mean of 2 inches and a variance of 8 square inches. The shape of the distribution is unknown.
Calculate the mean and variance of the sample mean X bar.
What is the (approximate) probability that the sample mean X bar falls between 1.8 and 2.4 inches?
Get Answers For Free
Most questions answered within 1 hours.