GreenBeam Ltd. claims that its compact fluorescent bulbs average no more than 3.50 mg of mercury. A
Question:
(a) Write the hypotheses for a right-tailed test, using GreenBeam's claim as the null hypothesis about the mean.
(b) Assuming a known standard deviation of 0.18 mg, calculate the z test statistic to test the manufacturer's claim.
(c) At the 1 percent level of significance (α = .01) does the sample exceed the manufacturer's claim?
(d) Find the p-value.
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a b c Yes z crit NOR...View the full answer
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Related Book For 
Applied Statistics In Business And Economics
ISBN: 9780073521480
4th Edition
Authors: David Doane, Lori Seward
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