y = $ 0.44 = $0.178 Item Globe Ball Big Pencil Globe Key Chain Cost (%)...
y = $ 0.44 = $0.178 Item Globe Ball Big Pencil Globe Key Chain Cost (%) $0.70 $0.35 $0.25 Probability 0.3 0.5 0.2 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, consisting of all the proportions of 25 children choosing the globe ball? Round to the ten-thousandths place