A coffee shop knows from past records that its weekly takings (sales) are normally distributed with a mean of $12,500 and a standard deviation of...

 A coffee shop knows from past records that its weekly takings (sales) are normally distributed with a mean of $12,500 and a standard deviation of $3200.  Answer the following questions:

*What is the chance that the weekly takings are exactly $12,500?

*Calculate the inter-quartile range of weekly takings. (Hint: Locate Q1 and Q3 first.)

*What are the maximum weekly takings for the worst 5% of weeks?