A sheet metal manufacturer is making 10-gauge sheet metal, which is supposed to be 3.416 mm thick. One of the pieces of manufacturing equipment was suspected of malfunctioning, so the manufacturer tested a random sample of 100 pieces of steel to make sure the average steel thickness is 3.416 mm.

1. Which of the following is a statement of the null hypothesis?
   
   • The equipment is making the sheet metal too thick. The average steel thickness is greater than 3.416 mm.
   • The equipment is not working properly. The average steel thickness is not 3.416 mm.
   • The equipment is working properly. The average steel thickness is 3.416 mm.
   
   
   
2. Which of the following is a statement of the alternative hypothesis?
   
   • The equipment is working properly. The average steel thickness is 3.416 mm.
   • The equipment is not working properly. The average steel thickness is not 3.416 mm.
   • The equipment is making the sheet metal too thick. The average steel thickness is greater than 3.416 mm.