Scientists are testing a new drug, which they think might allow people to memorize large amounts of information. group a is taking a sugar pill. group b is taking the new drug. both groups are 25–35 years old and are not taking any other medicine. after a month, both groups will be given a memorization test, and scientists will compare each group’s ability to memorize new information. which term would describe group a?
a.
control group

b.
independent group

c.
experimental group

d.
dependent group

You have two photos of a person walking. one shows the person at the corner of third and main streets, the other shows the person at the corner of tenth and main streets. there are lampposts at every corner in this town, and the first picture shows it to be 10: 32: 00 exactly. the second picture shows it to be 10: 49: 30. you know three facts: (1) all of the clocks are synchronized; (2) there are exactly 12 equal-sized blocks per kilometer in this town; and (3) the streets that cross main in this area are numbered consecutively, with no interruptions. what is the person’s average speed in kilometers per hour?