Question: Listed below are speeds mi h measured from southbound traffic on

Listed below are speeds (mi/h) measured from southbound traffic on I-280 near Cupertino, California (based on data from SigAlert). This simple random sample was obtained at 3:30 p.m. on a weekday. Use a 0.05 significance level to test the claim that the sample is from a population with a mean that is less than the speed limit of 65 mi/h.
62 61 61 57 61 54 59 58 59 69 60 67

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  • CreatedMay 03, 2015
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