J /-2 + 7 = -12. what is the value of j
2 answers:
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Answer:
(a) σ² = 144
(b) s² = 12
Step-by-step explanation:
(a) Population variance σ² = ∑(X - )² / N
The arithmetic mean
σ² =
=
=
=
σ² = 144
(b)
= 12
Answer:
Step-by-step explanation:
Be VERY careful. When it write out the equation that way, it will give the speculation of this:
Now, in this case, since you were extra explanatory about this [what is written in parentheses], two factors I know of that multiply to 15 are these:
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