4. Hot colors such as red are said to increase one’s activity. To find out if th

Question

4. Hot colors such as red are said to increase one’s activity. To find out if this inference is true researchers decided to paint the walls of a factory red. After six months the significant result showed that for each employee, productivity had increased between 30% and 40%. No other changes were made to the work schedule. This result (a) proves, (b) suggests a correlation, or (c) establishes the fact, that hot colors increase productivity.

5. 70% of the people who see doctors of any kind for lower back problems report some improvement within 90 days. [Some see doctors who manipulate their spine, others get drug treatments, and some undergo surgery.] 70% of the people who do not seek medical help report that their lower back problems come and go; get worse, and then better for no discernable reason. What conclusions (MORE THAN ONE ANSWER) do the above facts support?

(a) the cure for lower back pain is known

(b) the cure for lower back pain is unknown

(c) the cause of lower back pain is unknown

(d) the cause of lower back pain is known

Explanation / Answer

4. Correct Answer - A

Hot colors are the independent variable in this study, and all the other variables were controlled to see the productivity. So, in this experiment the hot colors can be directly attributed as the cause of the productivity.

5. Correct Answer - B & C

70% people cannot pinpoint a reason for their back problems and 70% of the people do not know an effective cure,.Hence, the cause and cure of back problem is unknown.

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