Use the sample information x¯ = 41, ? = 4, n = 20 to calculate the...

60.1K

Verified Solution

Question

Basic Math

Use the sample information x¯ = 41, ? = 4, n = 20 to calculatethe following confidence intervals for ? assuming the sample isfrom a normal population. (a) 90 percent confidence. (Round youranswers to 4 decimal places.) The 90% confidence interval is fromto (b) 95 percent confidence. (Round your answers to 4 decimalplaces.) The 95% confidence interval is from to (c) 99 percentconfidence. (Round your answers to 4 decimal places.) The 99%confidence interval is from to (d) Describe how the intervalschange as you increase the confidence level. The interval getsnarrower as the confidence level increases. The interval gets wideras the confidence level decreases. The interval gets wider as theconfidence level increases. The interval stays the same as theconfidence level increases.

Answer & Explanation Solved by verified expert

4.2 Ratings (572 Votes)

The formula to construct the confidence interval when populationstandard deviation is knowniswhere samplemean sample sizeGiven a 90 confidence interval for population meanFor 90 confidence See Answer

Get Answers to Unlimited Questions

Join us to gain access to millions of questions and expert answers. Enjoy exclusive benefits tailored just for you!

Membership Benefits:

Unlimited Question Access with detailed Answers
Zin AI - 3 Million Words
10 Dall-E 3 Images
20 Plot Generations
Conversation with Dialogue Memory
No Ads, Ever!
Access to Our Best AI Platform: Flex AI - Your personal assistant for all your inquiries!

Become a Member