carlosleblanc26
07.05.2021 •
Mathematics
Eleven people were given 46 grams (1.6 ounces) of dark chocolate every day for two weeks, and their vascular health was measured before and after the two weeks. Larger numbers indicate greater vascular health, and the mean increase for the participants was 1.3 with a standard deviation of 2.32. Assume a dotplot shows the data are reasonably symmetric with no extreme values. Find and interpret a 90% confidence interval for the mean increase in this measure of vascular health after two weeks of eating dark chocolate. Can we be 90% confident that the mean change for everyone would be positive?
(a) What is the margin of error for the confidence interval found in Example 1?
(b) What sample size is needed if we want a margin of error within ±0.5, with 90% confidence? (Use the standard deviation from the original sample to estimate σ.)
Solved
Show answers
More tips
- H Health and Medicine 10 Ways to Cleanse Your Colon and Improve Your Health...
- W Work and Career How to Write a Resume That Catches the Employer s Attention?...
- C Computers and Internet Е-head: How it Simplifies Life for Users?...
- F Family and Home How to Choose the Best Diapers for Your Baby?...
- F Family and Home Parquet or laminate, which is better?...
- L Leisure and Entertainment How to Properly Wind Fishing Line onto a Reel?...
- L Leisure and Entertainment How to Make a Paper Boat in Simple Steps...
- T Travel and tourism Maldives Adventures: What is the Best Season to Visit the Luxurious Beaches?...
- H Health and Medicine Kinesiology: What is it and How Does it Work?...
- O Other How to Choose the Best Answer to Your Question on The Grand Question ?...
Answers on questions: Mathematics
- M Mathematics System of equations. 8th grade math { y = 1/3 x + 2, x = 9...
- M Mathematics Select all the numbers that represented by point p....
- M Mathematics Raul borrowed $1,600 with a 1 year simple interest loan. Paid $131.20 in interest. The annual interest rate on Raul’s loan?...
- H Health Travel clerk education requirements...
- H History How is Christmas celebrated in Argentina?...
- S Social Studies What is the major body of water between asia and north america?...
Ответ: