Answer:
Step-by-step explanation:
midpoint -M
(7, 4 )
Given endpoints (x₁, y₁ ) and (x₂, y₂ ) then the midpoint is
( , )
Here (x₁, y₁ ) = (9, 6) and (x₂, y₂ ) = (5, 2) , then
midpoint = ( , ) = ( , ) = (7, 4 )
The probability distribution for x:"number of children per family for this income group" is:
With the information given we have the relative frequencies of each category.
We know:
12.25.
1) the formula of the volume given in the condition is:
V=2*2/7*10x.
2) If V=70, then
2*2/7*10x=70, where x=12.25.
the answer is 40 percent
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