Answered: Researchers have suggested that sleep…

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

Question

question 1

Researchers have suggested that sleep apnoea (the tendency to occasionally stop breathing when asleep) may worsen the effects of allergen-induced asthma. To investigate this possibility, Johnson and colleagues (2015), compared two groups of rats, a normal healthy non-allergic group, and a second group that were mildly allergic to ovalbumin. They subjected these rats to one of two treatments – 1) a 10-minute period of induced hypoxia (oxygen down to 10% of the air), representing the kind of temporary hypoxia that sufferers of sleep apnoea may be subjected to, and 2) a control (normal air) group. They then compared the respiratory function of both groups in these two treatments by using a two-factor ANOVA. (Questions are on the next page).

Source	df	F	P
Rat type	1	21.88	<0.0001
Oxygen treatment	1	141.13	<0.0001
Rat type x oxygen treatment	1	15.68	<0.001
Residual	36

What are the 3 null hypotheses are being tested in the ANOVA?
What is the result of the test of the interaction effect from this analysis?
What would be the most correct interpretation this result, based on the plot of means?