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Assuming that 80 percent of all deaths due to pneumonia or i

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Assuming that 80 percent of all deaths due to pneumonia or i [#permalink] New post   13 Aug 2020, 02:58
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Assuming that 80 percent of all deaths due to pneumonia or influenza occur among the elderly, defined as those age 65 and over, in which city was the least proportion of all deaths among the elderly attributed to pneumonia or influenza?

A. Houston

B. Indianapolis

C. Honolulu

D. Boston

E. Los Angeles


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Sakiib
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Re: Assuming that 80 percent of all deaths due to pneumonia or i [#permalink] New post   03 Sep 2020, 03:48
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Elderly death by pneumonia or influenza=.8*3532=2826
elderly death attributed to houston=.19*2826=536, los angels=.38*2826=1073, honolulu=367, boston=508...

elderly death ratio to all death for houston=536/13000=.041, los angels=1073/9000=.12, honolulu=367/3000=.1223, boston=508/5000

so least proportion is for Houston. Answer is A. :lol:





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Re: Assuming that 80 percent of all deaths due to pneumonia or i [#permalink] New post   22 Dec 2020, 20:39
Sakiib wrote:
Elderly death by pneumonia or influenza=.8*3532=2826
elderly death attributed to houston=.19*2826=536, los angels=.38*2826=1073, honolulu=367, boston=508...

elderly death ratio to all death for houston=536/13000=.041, los angels=1073/9000=.12, honolulu=367/3000=.1223, boston=508/5000

so least proportion is for Houston. Answer is A. :lol:





#SakibAtiq


Essentially you have assumed pneumonia related deaths are 80% among the elderly in each city. Is this a valid assumption?
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Re: Assuming that 80 percent of all deaths due to pneumonia or i [#permalink] New post   27 Dec 2020, 10:19
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Essentially yes
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Re: Assuming that 80 percent of all deaths due to pneumonia or i [#permalink] New post   28 Dec 2020, 07:09
Sakiib wrote:
Elderly death by pneumonia or influenza=.8*3532=2826
elderly death attributed to houston=.19*2826=536, los angels=.38*2826=1073, honolulu=367, boston=508...

elderly death ratio to all death for houston=536/13000=.041, los angels=1073/9000=.12, honolulu=367/3000=.1223, boston=508/5000

so least proportion is for Houston. Answer is A. :lol:





#SakibAtiq


Hi,

I am trying to understand what this question asks, why we do not have to add deaths of non elderly people from division ?
(Ex, 13000 for houston is the number of only elderly people and is not including the number of deaths of none elderly people.)

Best,
Gocha
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Re: Assuming that 80 percent of all deaths due to pneumonia or i [#permalink] New post   29 Dec 2020, 13:58
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Gocha wrote:
Hi,

I am trying to understand what this question asks, why we do not have to add deaths of non elderly people from division ?
(Ex, 13000 for houston is the number of only elderly people and is not including the number of deaths of none elderly people.)

Best,
Gocha


The pie chart tells us that 12% of the 3532 pneumonia/influenza deaths occurred in Houston.
That works out to about 424 deaths from pneumonia or influenza in Houston.
These 424 consisted of both elderly and non-elderly people.

The question asks to assume that 80 percent of all deaths due to pneumonia or influenza occur among the ELDERLY.
80% of 424 = 339.
So, 339 ELDERLY people in Houston died from pneumonia or influenza in Houston.
In the same year, about 13,000 ELDERLY people in Houston died

So, the ratio = 339/13,000
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Re: Assuming that 80 percent of all deaths due to pneumonia or i [#permalink] New post   29 Dec 2020, 14:27
GreenlightTestPrep wrote:
Gocha wrote:
Hi,

I am trying to understand what this question asks, why we do not have to add deaths of non elderly people from division ?
(Ex, 13000 for houston is the number of only elderly people and is not including the number of deaths of none elderly people.)

Best,
Gocha


The pie chart tells us that 12% of the 3532 pneumonia/influenza deaths occurred in Houston.
That works out to about 424 deaths from pneumonia or influenza in Houston.
These 424 consisted of both elderly and non-elderly people.

The question asks to assume that 80 percent of all deaths due to pneumonia or influenza occur among the ELDERLY.
80% of 424 = 339.
So, 339 ELDERLY people in Houston died from pneumonia or influenza in Houston.
In the same year, about 13,000 ELDERLY people in Houston died

So, the ratio = 339/13,000


Hi GreenLightTestPrep,

Thank you for replying, I may be miss understanding this question, but why we can divide by 13,000 ?
The question was not clear to me whether we should divide by 13,000 or we should divide by 25,000 (13,000 for elderly and 12,000 for less than 1 year).

I could not understand which sentence / word specifies the scope of denominator.
(I think I have difficult time to find out proportion to what.)

Thank you for your support.

Best,
Gocha
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Re: Assuming that 80 percent of all deaths due to pneumonia or i [#permalink] New post   29 Dec 2020, 14:34
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Gocha wrote:
GreenlightTestPrep wrote:
Gocha wrote:
Hi,

I am trying to understand what this question asks, why we do not have to add deaths of non elderly people from division ?
(Ex, 13000 for houston is the number of only elderly people and is not including the number of deaths of none elderly people.)

Best,
Gocha


The pie chart tells us that 12% of the 3532 pneumonia/influenza deaths occurred in Houston.
That works out to about 424 deaths from pneumonia or influenza in Houston.
These 424 consisted of both elderly and non-elderly people.

The question asks to assume that 80 percent of all deaths due to pneumonia or influenza occur among the ELDERLY.
80% of 424 = 339.
So, 339 ELDERLY people in Houston died from pneumonia or influenza in Houston.
In the same year, about 13,000 ELDERLY people in Houston died

So, the ratio = 339/13,000


Hi GreenLightTestPrep,

Thank you for replying, I may be miss understanding this question, but why we can divide by 13,000 ?
The question was not clear to me whether we should divide by 13,000 or we should divide by 25,000 (13,000 for elderly and 12,000 for less than 1 year).

I could not understand which sentence / word specifies the scope of denominator.
(I think I have difficult time to find out proportion to what.)

Thank you for your support.

Best,
Gocha


Think of proportion are ratio

We want: In which city was the least proportion of all deaths among the elderly attributed to pneumonia or influenza?
In other words we want the smallest value of (# of elderly who died of pneumonia/influenza)/(total # of elderly deaths)
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Re: Assuming that 80 percent of all deaths due to pneumonia or i [#permalink] New post   12 Nov 2023, 04:06
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