By means of a pilot survey, it is already known that the proportion of residents in opposition to the increased police presence is between 32% and 45%. How many respondents should be obtained in order...

By means of a pilot survey, it is already known that the proportion of residents in opposition to the increased police presence is between 32% and 45%. How many respondents should be obtained in order to estimate the proportion of residents in opposition to the policy to within 0.02 with 95% confidence?