In a colony, the mean age of all the males is $15$ years, and the mean age of all females is $19$ years. Find the condition that must be true about the mean age $m$ of the combined group of male and female in colony.

m = 17

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m > 17

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m < 17

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15 < m < 19

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Solution

The correct option is D $15 < m < 19$
Given is that mean age of all males is $15$ years and age of all females is $19$ years in a colony, when we find the mean age $m$ of the combined group of males and females in colony, we can conclude that mean age will be more than $15$ but less than $19$ . So $D$ gives the correct answer
$15 < m < 19$

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In a colony, the mean age of all the males is 15 years, and the mean age of all females is 19 years. Find the condition that must be true about the mean age m of the combined group of male and female in colony.

In a colony, the mean age of all the males is $15$ years, and the mean age of all females is $19$ years. Find the condition that must be true about the mean age $m$ of the combined group of male and female in colony.