For Exercise 1.70, see page 40; for 1.71 to 1.73, see pages 41-42; for 1.74 to 1.77, see pages 44-45; for 1.78, see page 46; for 1.79 and 1.80, see page 49; for 1.81 and 1.82, see page 50; and for 1.83 and 1.84, see page 53.
1.77 Use the 68-95-99.7 rule.
Refer to the previous exercise. Use the 68-95-99.7 rule to give a range of scores that includes 99.7% of these students.
1.77
99.7% of students have scores between 419 and 725.