The mean of five observations is 5 and their
\( \mathrm{P} \) varia... VIDEO
The mean of five observations is 5 and their
\( \mathrm{P} \) variance is 9.20 . If three of the given five
W observations are 1,3 and 8 , then a ratio of other two observations is:
(1) \( 10: 3 \)
(2) \( 4: 9 \)
(3) \( 5: 8 \)
(4) \( \square: 7 \)
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