Cheating: for a statistics project a community college student at diablo valley college (dvc) decides to investigate cheating in two popular majors at dvc: business and nursing. she selects a random sample of nursing and business courses and convinces the professors to distribute a short anonymous survey in their classes. the question about cheating is one of many other questions about college life. when the student summarizes the data, she finds that 42 of the 50 business students and 38 of the 70 nursing students admitted to cheating in their courses. true or false? the counts suggest that the normal model is a good fit for the sampling distribution of sample differences. (a) a·false o b. true

Runners run around the school's football field. the cross country coach determines that the width of the field is seventy yards shorter than the length. part a write an expression that represents the perimeter of the football field. let x represent the length of the football field. include parentheses in your expression. next, write an equivalent expression that does not include parentheses. what property or properties did you use to simplify? explain. part b the cross country coach later determines that the length of the football field is 120 yards. all students must run five laps. using your answer from part a, determine the actual number of yards that each athlete must run in the tryouts. in order to make the team, students must complete the laps in 6 minutes. how quickly must they run each lap?