A second grade teacher gives students prizes for participating in a geography extra-curricular activity.There are three prizes that a student can choose from.The table shows the cost of the item and the probability that the item will be chosen.The student can only choose one prize.On one occasion, 25 children participate.What is the standard deviation for the distribution of the sample proportion, consistingof all the proportions of 25 children choosing the globe ball?

Round to the ten-thousandths place.

\f