Question 12 (Mandatory) (2.5 points) ) Find the standard deviation for the following probability distribution. Note that you will need to calculate the expected value first, although I am only asking for the standard deviation. Round your probabilities to three decimal places and then round your final answer to the nearest whole dollar. Possible Outcome Frequency of Occurrence $0 25 $1000 10 2 $3000 a) $432 b) $3732 c) $1186 d) $755