You work for a large retailer and have been asked to estimate the proportion of your customers that are less than 30 years old. You have sampled a large number of stores and have found that of the 181 customers you have surveyed, 45 are less than 30 years old.
Assuming your sample is valid, what is the upper bound of a 95% confidence interval for the population proportion of customers who are less than 30 years old? (Report your answer as a decimal and not as a percentage. For example, report 0.052 rather than 5.2%.).