Question

In a betting game, the probability of winning $2 is 0.6 and the probability of winning...

In a betting game, the probability of winning $2 is 0.6 and the probability of winning $0 (nothing) is 0.4. Based on these information, the standard deviation of winning ($) is

a.

0.96
b.

1.20
c.

0.98
d.

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