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A certain vehicle emission inspection station advertises that the wait time for customers is less than 6 minutes. A local resident wants to test this claim and collects a random sample of 64 wait times for customers at the testing station. She finds that the sample mean is 5.57 ?minutes, with a standard deviation of 2.5 minutes. Does the sample evidence support the inspection? station's claim? Use the α = 0.10 level of significance to test the advertised claim that the wait time is less than 6 minutes.
What are the hypotheses for this? test?
H0?: μ = 6 minutes
H1?: μ < 6 minutes
What is the value of the test? statistic?
z0 or t0 = _______
?(Round to two decimal places as? needed.)
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