Arectangular field has a length of 105 feet and a width of 60 feet. on a map of the field, the width was drawn as 4 inches. what measurements should represent the length?

Scores on a university exam are normally distributed with a mean of 78 and a standard deviation of 8. the professor teaching the class declares that a score of 70 or higher is required for a grade of at least “c.” using the 68-95-99.7 rule, what percentage of students failed to earn a grade of at least “c”?