A new assembly-line procedure to increase production has been suggested by Mr. Mump. To test whether the new procedure is superior to the old procedure, a random sample of 15 assembly-line workers was selected. The number of units produced in an hour under the old procedure was determined, then the new Mump procedure was introduced. After an appropriate break-in period, their production was measured again. The results were:

At the .05 significance level, can we conclude the production is greater using the Mump method?
a. State the null and alternate hypotheses.
b. State the decision rule.
c. Arrive at a decision regarding the nullhypothesis.