3. A printer company claims that the mean warm-up time of a certain brand of printer...
3. A printer company claims that the mean warm-up time of a certain brand of printer is 15 seconds. An engineer of another company is conducting a statistical test to show this is an underestimate.
a) State the testing hypothesis.
b) The test yielded a p-value of 0.035. What would be the decision of the test if a= 0.05?
c) Suppose a further study establishes that the true mean warm-up time is 14 seconds. Did the engineer make the correct decision? If not, what type of error did he/she make?
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