A city has 1,047,581 residents. A recent census showed that 352,586 of these residents regularly use the city's public transportation system. A survey is being conducted in which 1,062 of the city's 1,047,581 residents will be randomly selected. This question relates to the number of people in the survey that is made up of people that do use the city's public transport. The number of people in the survey that do use public transport approximately follows a normal distribution. Calculate the standard deviation of this distribution. Give your answer rounded to 2 decimal places. Standard deviation =