1. The first seven customers of the day at a small donut shop have checks of $1.25, $2.36, $2.50, $2.15, $4.55, $1.10, and  $0.95, respectively. Based on the number of customers served each day, the manager  of the shop claims that the shop needs an average check  of $1.75 per person to stay profitable. Given her conten- tion, has the shop made a profit in serving the first seven customers?

2. A dental supplies distributor ships a customer 50 boxes of product A, 30 boxes of B, 60 boxes of C, and 20 boxes of D. The unit shipping costs (dollars per box) for the four products are $5, $2, $4, and $10, respectively. What is the weighted mean for shipping cost per unit?