A track coach asks half of the athletes, chosen randomly, to try wearing a new type of shoe. Later the coach compares results for those wearing the new and old shoe types. What is the dependent variable in this experiment?
a. The type of shoe
b. The athletes' performances
c. Variations in the weather
d. The track coach
b
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Dominic is at a job interview sitting across from the company's CEO, Ms. Bing. While she takes a phone call, Dominic tries to recall her first name. Her business card is on the desk, but its orientation is not facing Dominic straight on. The business card has the initial of Ms. Bing's first name, so Dominic mentally rotates that initial letter into a straight-up orientation. For which angle
(compared to the final straight-up orientation) would you predict Dominic would be fastest in identifying the initial? a. 30 degrees b. 60 degrees c. 90 degrees d. 180 degrees
The mating calls of ducks lack all of the characteristics of true language EXCEPT
a. communication. b. displacement. c. infinite creativity. d. semanticity.