Studies conducted in New York City and Boston have noted that more heart attacks occur in December and January than in all other months. Some people have tried to conclude that holiday stress and overindulgence cause the increased risk of heart attack. a. Identify a confounding variable whose effect on heart attack rate might be confounded x with that of the month variable, providing an alternative explanation for the increased risk of heart attack in December and January. Ex In lA more recent study in Los Angeles revealed a similar finding. b. Identify a potential confounding variable in wer the Boston and New York City studies that wol was eliminated from consideration in the Los Juni Angeles study.99 E bns vlianobl c. Identify another confounding variable that still pertains to the Los Angeles study. [Hint: You might think of a variable that would be b. eliminated by conducting the study in the ani southern hemisphere.] JO

Studies conducted in New York City and Boston have noted that more heart attacks occur in December and January than in all other months. Some people have tried to conclude that holiday stress and overindulgence cause the increased risk of heart attack. a. Identify a confounding variable whose effect on heart attack rate might be confounded x with that of the month variable, providing an alternative explanation for the increased risk of heart attack in December and January. Ex In lA more recent study in Los Angeles revealed a similar finding. b. Identify a potential confounding variable in wer the Boston and New York City studies that wol was eliminated from consideration in the Los Juni Angeles study.99 E bns vlianobl c. Identify another confounding variable that still pertains to the Los Angeles study. [Hint: You might think of a variable that would be b. eliminated by conducting the study in the ani southern hemisphere.] JO

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Description: Studies conducted in New York City and Bostonhave noted that more heart attacks occur inDecember and January than in all other months.Some people have tried to conclude that holidaystress and overindulgence cause the increased riskof heart attack.a.

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Question

Studies conducted in New York City and Boston
have noted that more heart attacks occur in
December and January than in all other months.
Some people have tried to conclude that holiday
stress and overindulgence cause the increased risk
of heart attack.
a. Identify a confounding variable whose effect
on heart attack rate might be confounded x
with that of the month variable, providing an
alternative explanation for the increased risk of
heart attack in December and January.
Ex
In lA more recent study in Los Angeles revealed a
similar finding.
b. Identify a potential confounding variable in
wer the Boston and New York City studies that wol
was eliminated from consideration in the Los
Juni Angeles study.99 E bns vlianobl
c. Identify another confounding variable that
still
pertains to the Los Angeles study. [Hint:
You might think of a variable that would be
b. eliminated by conducting the study in the
ani southern hemisphere.]
JO

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