Mathematics
Mathematics, 19.02.2020 04:50, kandi2565

A fitness instructor wants to test the effectiveness of a performance-enhanding herbal supplement on students in her exercise class. To create experimental groups that are similar at the beginning of the study, the students are assigned into two groups at random (they cannot choose which group they are in). Students in both groups are given a pill to take every day, but they do not know whether the pill is a placebo (sugar pill) or the herbal supplement. The instructor gives Group A the herbal supplement and Group B receives the placebo (sugar pill). The students' fitness level is compared before and after sik weeks of consuming the supplement or the sugar pill. No differences in performance ability were found between the two groups suggesting that the herbal supplement was not effective. Is this an example of an observational study or an experimental study? Why?

answer
Answers: 3

Other questions on the subject: Mathematics

image
Mathematics, 21.06.2019 16:10, cuppykittyy
The probability that a college student belongs to a health club is 0.3. the probability that a college student lives off-campus is 0.4. the probability that a college student belongs to a health club and lives off-campus is 0.12. find the probability that a college student belongs to a health club or lives off-campus. tip: p(a or b) = p(a) + p(b) - p(a and b) 0.54 0.58 0.70 0.82
Answers: 2
image
Mathematics, 21.06.2019 18:30, jb141553
If 3x+8=3x+8 is it one solution or no solution
Answers: 1
image
Mathematics, 21.06.2019 19:00, DestyHilBan1183
What are the solutions of the system? solve by graphing. y = -x^2 -6x - 7 y = 2
Answers: 2
image
Mathematics, 22.06.2019 02:30, sariahieveryone
Ablue whale traveled 3112 miles in 214hours. what was the whale's rate in yards per hour? (1 mile = 1,760 yards)
Answers: 1
Do you know the correct answer?
A fitness instructor wants to test the effectiveness of a performance-enhanding herbal supplement on...

Questions in other subjects:

Konu
Biology, 08.03.2020 23:17