TABLE 4-2 An Alcohol Awareness Task Force at a Big-Ten University Sampled

question 71

Multiple Choice

TABLE 4-2
An alcohol awareness task force at a Big-Ten university sampled 200 students after the midterm to ask them whether they went bar hopping the weekend before the midterm or spent the weekend studying, and whether they did well or poorly on the midterm. The following result was obtained.

-Referring to Table 4-2, what is the probability that a randomly selected student did well on the midterm or went bar hopping the weekend before the midterm?

• A) 30/200 or 15%
• B) (80+30)/200 or 55%
• C) (30+70)/200 or 50%
• D) (80+30+70)/200 or (110+100-30)/200 or 90%

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Definitions:

Psychobiotics

Treatment that uses live bacteria (probiotics) or compounds to enhance the growth of gut bacteria (prebiotics).

Probiotics

Live microorganisms which, when administered in adequate amounts, confer a health benefit on the host.

Gut Bacteria

Microorganisms living in the digestive tract that play a crucial role in digestion, immune function, and overall health.

Brain's Plasticity

The brain's ability to rearrange its connections, essentially rewiring itself in response to learning or experience or in reaction to injury.