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At Happywell, Inc., last year the average annual salary for dieticians

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At Happywell, Inc., last year the average annual salary for dieticians  [#permalink]

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New post 01 Jan 2015, 04:35
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68% (01:18) correct 32% (01:09) wrong based on 573 sessions

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At Happywell, Inc., last year the average annual salary for dieticians was $50,000, while the average annual salary for physical therapists was $42,000. The average annual salary for all Happywell employees last year was $40,000.

If the information above is correct, which one of the following conclusions can properly be drawn on the basis of it?

(A) There were more physical therapists than dieticians at Happywell last year.

(B) There was no dietician at Happy well last year who earned less than the average for a physical therapist.

(C) At least one Happywell employee earned less than the average for a physical therapist last year.

(D) At least one physical therapist earned less than the lowest-paid Happywell dietician last year.

(E) At least one dietician earned more than the highest-paid Happywell physical therapist last year.


Source: LSAT

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Re: At Happywell, Inc., last year the average annual salary for dieticians  [#permalink]

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New post 01 Jan 2015, 05:05
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C it is: At least one Happywell employee earned less than the average for a physical therapist last year.
-------->to pull the average down to 40,000, there must be some one who is earning less than the average of 42,000
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Re: At Happywell, Inc., last year the average annual salary for dieticians  [#permalink]

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New post 02 Jan 2015, 18:35
What about D ) ???
Surely, at least one physician needs to earn less than the lowest paid dietitian in ordar to bring the average income of physicians (42 000) to be less than the one of dietitians (50,000) ?
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Re: At Happywell, Inc., last year the average annual salary for dieticians  [#permalink]

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New post 02 Jan 2015, 18:35
What about D ) ???
Surely, at least one physician needs to earn less than the lowest paid dietitian in ordar to bring the average income of physicians (42 000) to be less than the one of dietitians (50,000) ?
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Re: At Happywell, Inc., last year the average annual salary for dieticians  [#permalink]

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New post 16 Mar 2015, 00:24
Ivan91,

Imagine the below situation.
Let's say D is the set of the salary of dieticians D = {Lowest, ----, --- etc} Avg = 50K
Let's say PT is the set of the salary of physical trainers PT = {Lowest, ----, --- etc} Avg = 42K

D says "At least one physical therapist earned less than the lowest-paid Happywell dietician last year."

Dis not necessarily true always. Imagine the lowest pay of PT is 39K. You can still have the lowest paid dietician to earn less than 39K and still average 50K.
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Re: At Happywell, Inc., last year the average annual salary for dieticians  [#permalink]

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New post 16 Mar 2015, 16:06
m happy to answer for the above doubt

C is the correct choice..coz one employee must be earning less than the total average to bring the average package pf the company down.


D and E both are contnders, but my friend there is an equal possibility they can be false.


In MUST BE TRUE/INFERENCE questions the answer should follow from the premises and it should be the only possibility not any possibilty.

C is true in any sense u cant say no to choice C.
For D ,E u can.So there 's a doubt.


hope it hepls

-h
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Re: At Happywell, Inc., last year the average annual salary for dieticians  [#permalink]

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New post 17 Mar 2015, 03:41
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Ivan91 wrote:
What about D ) ???
Surely, at least one physician needs to earn less than the lowest paid dietitian in ordar to bring the average income of physicians (42 000) to be less than the one of dietitians (50,000) ?



This is a weighted average question .

we can have D a set in which salary starts from 1,2,3,4,5,6,7,8,9....\(50000*N\) ,
at the same time we can have set P which start with 2,3,4,5,6,7,8,9.....\(42000*K\)
now we can see there is no element in set P which is lower than the lowest element in set D .

As for answer choice C , why is this correct ? it is correct because if there is no employee who earned less than the average of P group then the average should go above 42000 K .
it is a weighted avg . question

(50000*D + 42000*K)/(N+K) = 40000
now if none of the member in K earned less than 42000 then this average would never be less than 42000.
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Re: At Happywell, Inc., last year the average annual salary for dieticians  [#permalink]

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New post 17 Mar 2015, 03:46
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hsbinfy wrote:
m happy to answer for the above doubt

C is the correct choice..coz one employee must be earning less than the total average to bring the average package pf the company down.


D and E both are contnders, but my friend there is an equal possibility they can be false.


In MUST BE TRUE/INFERENCE questions the answer should follow from the premises and it should be the only possibility not any possibilty.

C is true in any sense u cant say no to choice C.
For D ,E u can.So there 's a doubt.


hope it hepls

-h



for E
atleast 1 dietician earned more than highest paid therapist .
here is the set of dietician in which none has earned more than highest paid Therapist.
D= \({50000,50000,50000, 50000, 50000}\) Average =50000
PR = \({1,2,3,4,209990}\) Average=42000
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Re: At Happywell, Inc., last year the average annual salary for dieticians  [#permalink]

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New post 13 Mar 2016, 00:56
(A) There were more physical therapists than dieticians at Happywell last year. - Incorrect - We cannot infer this

(B) There was no dietician at Happy well last year who earned less than the average for a physical therapist. - Incorrect - We cannot infer this

(C) At least one Happywell employee earned less than the average for a physical therapist last year. - Correct - If the average of Happywell employees is 40k, atleast one employee must earn less than the physical therapist

(D) At least one physical therapist earned less than the lowest-paid Happywell dietician last year. - Incorrect - We cannot infer this

(E) At least one dietician earned more than the highest-paid Happywell physical therapist last year. - Incorrect - We cannot infer this.

Answer: C
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Re: At Happywell, Inc., last year the average annual salary for dieticians  [#permalink]

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New post 22 May 2016, 00:39
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vards wrote:
At Happywell, Inc., last year the average annual salary for dieticians was $50,000, while the average annual salary for physical therapists was $42,000. The average annual salary for all Happywell employees last year was $40,000.

If the information above is correct, which one of the following conclusions can properly be drawn on the basis of it?

(A) There were more physical therapists than dieticians at Happywell last year.

(B) There was no dietician at Happy well last year who earned less than the average for a physical therapist.

(C) At least one Happywell employee earned less than the average for a physical therapist last year.

(D) At least one physical therapist earned less than the lowest-paid Happywell dietician last year.

(E) At least one dietician earned more than the highest-paid Happywell physical therapist last year.


Source: LSAT


Simple Mathematics
and only answer choice C confirms that
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Re: At Happywell, Inc., last year the average annual salary for dieticians  [#permalink]

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New post 02 Jul 2018, 23:15
C is clear to be the answer.

A- we could have agreed, if the passage had said that there are only 2 departments
B - We got too little information
C - Yes!
D - Could be but cannot say
E - Could be but cannot say
vards wrote:
At Happywell, Inc., last year the average annual salary for dieticians was $50,000, while the average annual salary for physical therapists was $42,000. The average annual salary for all Happywell employees last year was $40,000.

If the information above is correct, which one of the following conclusions can properly be drawn on the basis of it?

(A) There were more physical therapists than dieticians at Happywell last year.

(B) There was no dietician at Happy well last year who earned less than the average for a physical therapist.

(C) At least one Happywell employee earned less than the average for a physical therapist last year.

(D) At least one physical therapist earned less than the lowest-paid Happywell dietician last year.

(E) At least one dietician earned more than the highest-paid Happywell physical therapist last year.


Source: LSAT
Re: At Happywell, Inc., last year the average annual salary for dieticians &nbs [#permalink] 02 Jul 2018, 23:15
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