NDA Math Statistics

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Question : 86 of 100

Marks: +1, -0

If

−

x

and

−

y

are the means of two distributions such that

−

x

<

−

y

and

−

z

is the mean of the combined distribution, then which one of the following statements is correct?

[NDA II 2014]

−
x
<
−
y
<
−
z
−
x
>
−
y
>
−
z
−
z
=
−
x
+
−
y
2
−
x
<
−
z
<
−
y

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