OpenStax, Introductory Statistics 2e §8.1 A Single Population Mean using the Normal Distribution · Exercise 5 · Statistics · Normal distribution
A Single Population Mean using the Normal Distribution · Exercise 5
The standard deviation of the weights of elephants is known to be approximately 15 pounds. We wish to construct a 95% confidence interval for the mean weight of newborn elephant calves. Fifty newborn elephants are weighed. The sample mean is 244 pounds. The sample standard deviation is 11 pounds.
What will happen to the confidence interval obtained, if 500 newborn elephants are weighed instead of 50? Why?
OpenStax, Introductory Statistics 2e · §8.1 A Single Population Mean using the Normal Distribution · Exercise 5
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