At its highest point, the elevation of a county is 5,764 feet above sea level. At its lowest point, the elevation of the county is 7 feet below sea level. Answer parts a through c. a. Write an expression using integers to represent the difference between the elevations.

Now, martin can reasonably guess that the standard deviation for the entire population of people at the mall during the time of the survey is $1.50. what is the 95% confidence interval about the sample mean? interpret what this means in the context of the situation where 95 people were surveyed and the sample mean is $8. use the information in this resource to construct the confidence interval.