Calculating the Sample Size n: Continuous and Binary Random Variables · Exercise 2
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.
In words, define the random variables X and .
Its source prints no answer for this problem, so there's nothing to check against.
OpenStax, Introductory Business Statistics 2e · §8.4 Calculating the Sample Size n: Continuous and Binary Random Variables · Exercise 2
No hints for this one.
Check your full solution
Attach photos of your pages (up to 3) or one PDF — or check what you typed above. Lemma reads the work and verifies the reasoning, not just the answer.
Your first check today doesn't need an account.
Your photos and PDFs are read once and not stored — only the transcription is kept.