Answered: In one study, researchers at McGill…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

See similar textbooks

Related questions

Concept explainers

Question

In one study, researchers at McGill University recruited
127 people with high cholesterol and split them into two
groups. One took a probiotic supplement twice a day
for nine weeks, while the second group took a placebo.
The probiotic group saw their total cholesterol drop by

9 percent and their LDL, or “bad cholesterol,” fall almost
12 percent. In a different study, conducted in Britain,
80 volunteers “were given probiotics for six weeks and
then switched, later on, to a placebo. That study found no
difference in cholesterol levels when the subjects took the
supplement versus the dummy pills.”
Which of the following is true:

a) The McGill study is a controlled randomized experi-
ment, while the British study is an observational

study.

b) The McGill study is a completely randomized ex-
periment, while the British study is a matched pairs

experiment.
c) The results from the McGill study are more valid
because it includes blinding while the British study
does not.
d) We have reason to believe that the design of one of
these experiments was flawed since the results are
contradictory.
e) Conclusions from the British study cannot be trusted
since there is no control group.

Expert Solution

Trending now

This is a popular solution!

Step by step

Solved in 2 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

$Point Estimation, Limit Theorems, Approximations, and Bounds$

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, statistics and related others by exploring similar questions and additional content below.

Similar questions