Question
A manufacturer claims that the mean lifetime of its fluorescent bulbs is 1000 hours. A homeowner suspects that it is less than that. She selects
A manufacturer claims that the mean lifetime of its fluorescent bulbs is 1000 hours. A homeowner suspects that it is less than that. She selects 40 bulbs and finds the mean lifetime to be 980 hours with a standard deviation of 80 hours. If = 0.01, test the manufacturer's claim using P-values.
Define
Hypotheses
Justify
Test statistic
Pvalue
Conclusion
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Fundamentals Of Matrix Analysis With Applications
Authors: Edward Barry Saff, Arthur David Snider
1st Edition
111895369X, 9781118953693
