This city was Tenochtitlan; it had about 200 000 people (some scholars estimate at 300 000 however). There was another city next to it: Tlatelolco. Today Tlatelolco in in Mexico city.
The correct answer would be, Carryover Effect.
In this case, the study is contaminated by a Carryover Effect.
Explanation:
When an individual subject or a group of subjects, carries over from one experiment to another experiment, this is called as the carryover effect.
In carryover effect, subjects are exposed to one experiment, and then after some time they are carried over to another experiment. This effect is called as the Carryover Effect.
In the given example, Juan carried out experiment to check the effectiveness of two drugs in treating migraines on the same participant but with a gap of 8 hours. After 8 hours, the first drug was still in participant's system. In such a case, the study has been said to be contaminated by the Carryover Effect.
The true results of both drugs would have seen if the second drug was given to the participant when the first drug was completely out of the body of the participant.
Learn more about Carryover Effect in other scenarios at:
brainly.com/question/12203949
#LearnWithBrainly
<span>Their most positive moods were expressed on
"Fridays".</span>
Facebook is an American online web-based social networking
and person to person communication organization situated in Menlo Park,
California. Its site was propelled on February 4, 2004, by Zuckerberg,
alongside his colleague Harvard Understudies.It is currently under scrutiny
because of the privacy issues which came up during the recent years.
Answer:
Mexico still have influences from the explorers that landed on their shores in the late 1400s and early 1500s European exploratory voyages to the East and the colonization of the New World.
America is heavily influenced by the people who were seeking religious freedom and settled on the east coast of the U.S. therefore a c e d
The stages that comprise sleep, as well as sleep latency onset, are collectively called slow-wave sleep (SWS).
They occur during the first third of the night. <span>Stage 3 lasts only a few minutes and constitutes about 3 to 8 percent of sleep, while </span>stage 4 lasts approximately 20 to 40 minutes in the first cycle and makes up about 10 to 15 percent of sleep.