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It is desired to check the calibration of a scale by weighing a standard 9 g weight 100 times. Let μ be the population mean reading on the scale, so that the scale is in calibration if μ = 9. A test is made of the hypotheses H0 : μ = 9 versus H1 : μ ≠ 9.

a. Which of the three conclusions is best if H0 is rejected?

Multiple Choice O The scale might be in calibration. The scale is in calibration. The scale is out of calibration.

b. Which of the three conclusions is best if H0 is not rejected?

Multiple Choice The scale might be in calibration The scale is in calibration. The scale is out of calibration.

c. Is it possible to perform a hypothesis test in a way that makes it possible to demonstrate conclusively that the scale is in calibration? Explain. Check all that are true.

Check All That Apply Yes. We can test Ho : u #9 vs. Hi :u=9. Then if we reject H, we can conclude that u=9. No. We would have

math   Statistics-And-Probability   
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