Listed below are speeds mih measured from southbound

Reference no: EM13608760

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 .05 significance level to test the claim of the highway engineer that the standard deviation of speeds is equal to 5 mph.

62 61 61 57 61 54 59 58 59 69 60 67

Reference no: EM13608760

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