Instructions: Please show all of your work.
Question: Assuming that a simple random sample of size 250 is being selected from a population that is approximately normally distributed (N=100,000). Assuming that the population SD (standard deviation) is equal to 5 and the sample average is equal to 30, determine a 90% confidence interval for the true average of this population. (If this confidence interval can not be determined, explain why not.)
I am supposed to identify which of the three confidence interval types this is (population average, population proportion, or population percentage), and then solve the problem. However, I have no clue how to determine which confidence interval this problem is. Any help would be appreciated. Thanks!!
Delivering a high-quality product at a reasonable price is not enough anymore.
That’s why we have developed 5 beneficial guarantees that will make your experience with our service enjoyable, easy, and safe.
You have to be 100% sure of the quality of your product to give a money-back guarantee. This describes us perfectly. Make sure that this guarantee is totally transparent.Read more
Each paper is composed from scratch, according to your instructions. It is then checked by our plagiarism-detection software. There is no gap where plagiarism could squeeze in.Read more
Thanks to our free revisions, there is no way for you to be unsatisfied. We will work on your paper until you are completely happy with the result.Read more
Your email is safe, as we store it according to international data protection rules. Your bank details are secure, as we use only reliable payment systems.Read more
By sending us your money, you buy the service we provide. Check out our terms and conditions if you prefer business talks to be laid out in official language.Read more