If the mean of
123
(x ... 16) 2 16
16
+ + + + +´
x x
is 9, the mean of the last three observations
is
(a) 1
10
3
(b) 2
10
3
(c) 1
11
3
(d) 2
11
3
Answers
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2
Answer:
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Answered by
1
Answer:
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