I need help with part 3

Lunch break: In a recent survey of 655 working Americans ages 25-34, the average weekly amount spent on lunch was $45.69 with standard deviation $2.67. The weekly amounts are approximately bell-shaped. Part 1 of 3 (a) Estimate the percentage of amounts that are between $40,35 and $51.03. Approximately 95% |of the amounts fall between $40.35 and $51,03. Part 2 of 3 X (b) Estimate the percentage of amounts that are between $37.68 and $53.70. Approximately 88.9% of the amounts fall between $37.68 and $53.70. Correct Answer: Almost all of the amounts fall between $37.68 and $53.70. Part: 2 / 3 Part 3 of 3 (c) Between what two values will approximately 68% of the amounts be? Approximately 68% of the amounts fall between $ and S X