An experiment was conducted to determine if any significant differences exist in the strength of parachutes woven from synthetic fibers from different suppliers. Five parachutes were woven for each group –Supplier 1, Supplier 2, Supplier 3, and Supplier 4. The strength of the parachutes is measured by placing them in a testing device that pulls on both ends of the parachute until it tears apart. The amount of force required to tear the parachute is measured on a tensile-strength scale where the larger the value the stronger the parachute. Test to see if there are any differences using the .05 level.

1. What is the null hypothesis?

 

1. What is the alternate hypothesis?

 

1. What is the value of the F test?

 

1. What is the p value of the F test?

2. Which means are different (if any)?