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."

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Definitions:

Lower Extremities

Lower extremities refer to the limbs and structures of the lower part of the body, including the hips, thighs, legs, ankles, and feet.

Precapillary Sphincter

A band of smooth muscle that adjusts blood flow into capillaries mainly by contracting and relaxing, thereby regulating the passage of blood into tissues.

Lactate Production

Lactate production occurs during anaerobic respiration in muscles, where glucose is converted to lactate in the absence of sufficient oxygen, leading to muscle fatigue.

Venous Tone

The degree of constriction experienced by the veins, influencing the volume of blood held within venous reservoirs and blood pressure.