Mathematics, 14.07.2019 23:00 angie249

Arandom sample of 100 automobiles traveling on a section of an interstate showed an average speed of 60 mph. the distribution of speeds of all cars on this section of highway is normally distributed, with a standard deviation of 13.5 mph. refer to exhibit 8-3. if we are interested in determining an interval estimate for μ at 90.0% confidence, the z value to use is

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Arandom sample of 100 automobiles traveling on a section of an interstate showed an average speed of...