Upright vacuum cleaners have either a hard body type or a soft body type. Shown are the weights in pounds of a sample of each type. At a 0.05, can it be concluded that the means of the weights are different?

a. State the hypotheses and identify the claim.
b. Find the critical value(s).
c. Compute the test value.
d. Make the decision.
e. Summarize the results.

Hard body types Soft body types 21 17 17 20 16 17 15 20 23 16 17 17 13 15 16 18 18 24 1313 12 15