Anne Jones, a manager at a localStarbucks, wants to determine the proportion of teenage girls among hericed-coffee customers to better target next marketing campaign tothis group of the population. Anne surveys25 of her iced-coffee customers and finds that 12 of them were teenage girls who spend an average of $4.26on iced-coffee. What is the mean of the sampling distribution of the proportion ofteenage girls among iced-coffee customers?