The mean of the numbers \( a, b, 5,8,10 \) is 6 and the
\( \mathrm{...
The mean of the numbers \( a, b, 5,8,10 \) is 6 and the
\( \mathrm{P} \) variance is 6.80 . Then, which one of the following
W gives possible values of \( a \) and \( b \) ?
(1) \( a=3, b=4 \)
(2) \( a=0, b=7 \)
(3) \( a=5, b=2 \)
(4) \( a=1, b=6 \)
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