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 19:40, abiszcz21
Which system of linear inequalities is represented by the graph?
Answers: 1
image
Mathematics, 21.06.2019 20:00, myparentsrock17
Given ab and cb are tangents of p, and m =10°. what is the measure of abp?
Answers: 1
image
Mathematics, 21.06.2019 21:30, Diamondnado3046
What percent of 18 is 24? and plz explain thx.
Answers: 2
image
Mathematics, 21.06.2019 22:30, Shiey0409
Which of the following represents the length of a diagonal of this trapezoid?
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
Mathematics, 28.08.2020 23:01
Konu
Mathematics, 28.08.2020 23:01
Konu
Spanish, 28.08.2020 23:01
Konu
Mathematics, 28.08.2020 23:01
Konu
History, 28.08.2020 23:01