Error Analysis A contractor purchases 4 dozen pairs of padded work gloves for $59.04. He incorrectly calculates the unit price as $14.76 per pair for the expense report. What is the correct unit
price? What is the error?

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”?