Which Best Illustrates the Distinction Between Statistical Significance and Practical

question 32

Multiple Choice

Which best illustrates the distinction between statistical significance and practical importance?

• A)"In 2006, 240 out of 400 statistics students at Oxnard Technical College sold their textbooks at the end of the semester, compared with 220 out of 330 students in 2005, a significant decrease."
• B)"Our new manufacturing technique has increased the life of the 80 GB USB AsimoDrive external hard disk significantly, from 240,000 hours to 250,000 hours."
• C)"In 50,000 births, the new vaccine reduced the incidence of infant mortality in Morrovia significantly from 14.2 deaths per 1000 births to 10.3 deaths per 1000 births."
• D)"The new Sky Penetrator IV business jet's cruising range has increased significantly from 3,975 miles to 4,000 miles."