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In a neighborhood consisting of 2,000 homes, 80 percent of
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21 Dec 2017, 16:59
21 Dec 2017, 16:59
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In a neighborhood consisting of 2,000 homes, 80 percent of the homes are valued at $325,000 or less. Which of the following statements about the values of the homes in the neighborhood must be true?
Indicate \(all\) such statements.
A. The average (arithmetic mean) value is at most $325,000.
B. The median value is at most $325,000.
C. At most 400 homes have values greater than $325,000.
kudo for the right solution and explanation
Indicate \(all\) such statements.
A. The average (arithmetic mean) value is at most $325,000.
B. The median value is at most $325,000.
C. At most 400 homes have values greater than $325,000.
kudo for the right solution and explanation
Re: In a neighborhood consisting of 2,000 homes, 80 percent of
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22 Dec 2017, 00:56
22 Dec 2017, 00:56
1
So 0,8 * 2000 = 1600 values evaluated at at least 325 000
So 400 are greater than 325 000 C must be true
Since we have 1600 houses at 325 000 or less and 400 at more than 325 000
We cannot conclude that the median is 325 000. The 1000th and 1001 th values could be either less than 325 000 or equals 325000. So B is out.
The average is the number of houses * prices divided by the total of houses.
So it could be written as (<= 325 000)(1600) + (400)((>325000) /2000
Therefore A is out
So 400 are greater than 325 000 C must be true
Since we have 1600 houses at 325 000 or less and 400 at more than 325 000
We cannot conclude that the median is 325 000. The 1000th and 1001 th values could be either less than 325 000 or equals 325000. So B is out.
The average is the number of houses * prices divided by the total of houses.
So it could be written as (<= 325 000)(1600) + (400)((>325000) /2000
Therefore A is out
Re: In a neighborhood consisting of 2,000 homes, 80 percent of
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22 Dec 2017, 21:52
22 Dec 2017, 21:52
1
Popo wrote:
So 0,8 * 2000 = 1600 values evaluated at at least 325 000
So 400 are greater than 325 000 C must be true
Since we have 1600 houses at 325 000 or less and 400 at more than 325 000
So 400 are greater than 325 000 C must be true
Since we have 1600 houses at 325 000 or less and 400 at more than 325 000
I donot think your assumption is wright- can you plz explain how you assumed the remaing 400 houses have values more than 325000. As nothing is mentioned about the remaining 400 houses
