?Highway Speeds Listed below are speeds (mi/h) measured from southbound tra?c on I-280
Chapter 7, Problem 15(choose chapter or problem)
Highway Speeds Listed below are speeds (mi/h) measured from southbound traμc on I-280 near Cupertino, California (based on data from SigAlert). This simple random sample was obtained at 3:30 PM on a weekday. Use the sample data to construct a 95% confidence interval estimate of the population standard deviation. Does the confidence interval describe the standard deviation for all times during the week?
62 61 61 57 61 54 59 58 59 69 60 67
Unfortunately, we don't have that question answered yet. But you can get it answered in just 5 hours by Logging in or Becoming a subscriber.
Becoming a subscriber
Or look for another answer