20 % were found ticketless on a bus the sum of squares and standard deviation of the amount found in their pockets world rupees 2000 and rupees 6 respectively. if the total fine imposed on the pessenger is equals to a totalamount recovered from them and 5:00 imposed is uniform what is the amount each one of them has to pay as fine.
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Variance is
n
∑x
2
−(
n
∑x
)
2
=6.8 and (
n
∑x
)=6 (given)
=>
5
a
2
+b
2
+64+25+100
−36=6.8=a
2
+b
2
+9=34.0=>a
2
+b
2
=25
Now check options.
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