OpenStax, Statistics §8.1 A Single Population Mean Using the Normal Distribution · Exercise 3 · Statistics · Normal distribution
A Single Population Mean Using the Normal Distribution · Exercise 3
The standard deviation of the weights of elephants is known to be approximately 15 lb. We wish to construct a 95 percent confidence interval for the mean weight of newborn elephant calves. Fifty newborn elephants are weighed. The sample mean is 244 lb. The sample standard deviation is 11 lb.
Which distribution should you use for this problem?
OpenStax, Statistics · §8.1 A Single Population Mean Using the Normal Distribution · Exercise 3
Stuck? A gentle nudge
No hints for this one.
Your working
Check your full solution
Upload photos of your handwritten work or a PDF, and Lemma will read it and tell you whether it's right — and where it first goes wrong if not.