Answered: Swimming Recently, a group of adults…

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

Topic Video

Question

Swimming Recently, a group of adults who swim regu-
larly for exercise were evaluated for depression. It turned

out that these swimmers were less likely to be depressed
than the general population. The researchers said the
difference was statistically significant.

a) What does “statistically significant” mean in this
context?
b) Is this an experiment or an observational study?
Explain.

c) News reports claimed this study proved that swim-
ming can prevent depression. Explain why this conclu-
sion is not justified by the study. Include an example

of a possible lurking variable.
d) But perhaps it is true. We wonder if exercise can ward
off depression, and whether anaerobic exercise (like
weight training) is as effective as aerobic exercise
(like swimming). We find 120 volunteers not currently
engaged in a regular program of exercise. Design an
appropriate experiment.

Expert Solution

Trending now

This is a popular solution!

Step by step

Solved in 3 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

$Research Design Formulation$

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