Biology, 29.11.2020 08:00, aaliyah1860
1. Does ginkgo improve memory? The law allows marketers of herbs and other natural
substances to make health claims that are not supported
by evidence. Brands of ginkgo extract
claim to "improve memory and concentration." A randomized comparative experiment found no
statistically significant evidence for such effects. The subjects were 350 healthy volunteers over
60 years old. They were randomly assigned to ginkgo or a placebo pill (a dummy pill that looks
and tastes the same). All the subjects took a battery of tests for learning and memory before
treatment started and again after six weeks.
(d) Name two variables that were controlled in this experiment and why was it beneficial to
control these variables? (3 pts)
Answers: 2
Biology, 21.06.2019 14:40, kahliey
Select all the correct answers. which statements fail to meet the requirements of a scientific claim? 1 even though evidence indicates that the solar system's planets follow elliptical paths, copernicus's model involving circular orbits is true. 2 the evidence supporting newton's laws of motion was accurate in newton's time, but the universe operates differently today. 3 flowers that reflect the most ultraviolet light are more likely to attract bees and other pollinators than flowers that reflect less ultraviolet light. 4 in the final 100 meters of a 10,000-meter race, an athlete's speed is more strongly related to anaerobic efficiency than to aerobic efficiency.
Answers: 2
1. Does ginkgo improve memory? The law allows marketers of herbs and other natural
substances to ma...
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