A couple decides to keep having children until they have a girl, at which point they will stop having children. They also agree to having a maximum of three children. The table below shows the probability distribution of X = the number of children such a couple would have X = # of children 1 2 3 P(X) 0.5 0.25 0.25 Given that My = 1.75 children, find the standard deviation of the children such a couple would have. Round your answer to two decimal places