Question: A Bernoulli random variable, representing whether or not the stock market goes up or down tomorrow (assume that the market cannot be unchanged), has an

A Bernoulli random variable, representing

whether or not the stock market goes up or down tomorrow (assume that the

market cannot be unchanged), has an "up"

probability of 0.6 and a "down" probability of 0.4. What is the standard deviation of this random

variable?

1 point

0.24

0.6

0.4

0.49

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