In my Physics lab, we divided into groups and our task was to throw darts on a target containing 13 bins. The ultimate goal is to hit bin 7. The bins look something like the image below. At the end, our class combined each groups average, standard deviation, and standard error (located below). There is a class table provided below where each group combined each of their data (how many darts landed on different bins) into one table. There are two questions (posted at the very bottom), problems 9 and 10, from the lab that puzzles me. If you need any more info, just ask me about it. I've been thinking about this for 3 hours and I can't make sense of it. Here is the target. It was just a paper that we pinned to the wall. All 13 bins. Here are data for each group and also the combined data from the class as a whole under the column "Class" Here is the class table (how many darts landed on different bins for each group combined) Problem 9: I calculated the expected number for the bin #1. I plugged in 2.7 for the standard deviation and 7.22 for X (average) and got 1.09E-5. I thought this formula was supposed to calculate the "expected number of darts" for each bin? 1.09E-5 doesn't seem to make sense, or maybe I'm misunderstanding this formula? Problem 10: For this problem, do I just copy down whatever answers I get from problem 9? Though from the answer that I got for bin #1, it doesn't make sense to put 1.09E-5.