15) The D. O.T. collected data for a particular stretch of 1-85 and found that the average speed was 70 mph with a standard deviation of 15 mph and the
distribution is approximately normally distributed. The actual Speed Limit for the
stretch of road is a maximum of 70 mph and minimum of 40 mph. What
percentage of drivers actually drive between 40 mph and 70 mph?*

For a science project, a high school research team conducted a survey of local air temperatures. based on the results of the survey, the found that the average temperatures were around 10 degrees higher than expected. this result was wrong. the trouble with the survey was that most of the locations were exposed to direct sunlight and located over asphalt or sand, which resulted in higher temperatures than normal. this is a classic example of an error in which phase of inferential statistics?