A school administrator wants to know what proportion of the approximately teachers in their state have a master's degree. the administrator takes an of teachers from a statewide database containing every teacher, and they find teachers in the sample have a master's degree What is the confidence interval for the proportion of teachers in the state with a master's degree, based on the sample data provided?
a) 95%
b) 90%
c) 80%
d) 99%
