Manufacturing and Product Development
The Brunton Optimus Crux Camping Stove, a lightweight camping stove, is designed to accept a tri-blend fuel made of propane, iso-butane, and butane. The cartridges for this stove are sold with camping equipment, and the label indicates 225 grams of fuel. To check this claim, 52 cartridges were randomly selected and the amount of fuel in each was carefully measured. The sample mean was = 224.2 grams.
a. Is there any evidence that the true mean amount of fuel in these cartridges is less than the advertised amount? Assume σ = 3.6 and use a = 0.05.
b. What assumptions did you make in order to conduct the hypothesis test in part (a)?